ROLLOUT 6 · Qiskit/qiskit-terra
qiskit__qiskit-terra-5833
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454 stotal time
10tool calls
10model calls
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104,088prompt tokens read
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System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`. Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run. ## Critical Environment & Grader Rules 1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`. 2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files. 3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`. 4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks: `pytest path/to/test_file.py -k pattern -q --tb=short --no-header` If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off. 5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission. ## Execution Protocol ### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls) - The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories. - Run a single compound `run_command` with `grep -rn --include="*.py"` to locate: (a) the exact symbols, error strings, or functions from the problem description, (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and (c) the closest existing unit test files under `tests/`. ### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls) - Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests. - Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types. ### Phase 3 — Reproduce Bug in One Call (1 tool call) - Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts. ### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls) - Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`. - Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests. - **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`. ### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls) - Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`. - Run `git status --short && git diff` via `run_command`. Confirm: - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately), - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched), - Minimal, clean diff with valid imports and indentation. - Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 10,333 characters
You are evaluating a software engineering task for repository Qiskit/qiskit-terra.
Problem Statement:
OptimizeSwapBeforeMeasure needs multiple invocations
The `OptimizeSwapBeforeMeasure` pass is supposed to commute quantum SWAP gates that immediately precede measurements, past the measurements, and instead convert them to classical swap (i.e.just retarget the measurement clbit).
However this should be generalized to work with any permutation that happens before the measurements, not just one swap layer. I made this work by invoking it many times for the example below, but really one invocation should be smart enough to remove all the swaps (that whole swap network should be modeled as a permutation).
```py
from qiskit import QuantumCircuit
from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print(circ)
_depth_check = [Depth(), FixedPoint('depth')]
_opt = [OptimizeSwapBeforeMeasure()]
def _opt_control(property_set):
return not property_set['depth_fixed_point']
pm = PassManager()
pm.append(_depth_check + _opt, do_while=_opt_control) # should not need this do_while
print(pm.run(circ))
```
```
┌─┐
q_0: ─X──X─────X────┤M├─────────────────────────────────
│ │ │ └╥┘ ┌─┐
q_1: ─X──X──X──X──X──╫─────X────┤M├─────────────────────
│ │ ║ │ └╥┘ ┌─┐
q_2: ───────X──X──X──╫──X──X─────╫──X────┤M├────────────
│ ║ │ ║ │ └╥┘┌─┐
q_3: ─X─────X──X─────╫──X──X──X──╫──X─────╫─┤M├─────────
│ │ ║ │ │ ║ ║ └╥┘┌─┐
q_4: ─X──X──X──X─────╫──X──X──X──╫──X─────╫──╫─┤M├──────
│ │ ║ │ ║ │ ║ ║ └╥┘┌─┐
q_5: ────X──X──X──X──╫──X──X─────╫──X──X──╫──╫──╫─┤M├───
│ │ ║ │ ║ │ ║ ║ ║ └╥┘┌─┐
q_6: ─X──X──X──X──X──╫──X──X─────╫─────X──╫──╫──╫──╫─┤M├
│ │ │ ║ │ ┌─┐ ║ ║ ║ ║ ║ └╥┘
q_7: ─X──X─────X─────╫──X─┤M├────╫────────╫──╫──╫──╫──╫─
║ └╥┘ ║ ║ ║ ║ ║ ║
c: 8/════════════════╩═════╩═════╩════════╩══╩══╩══╩══╩═
0 7 1 2 3 4 5 6
┌─┐
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┌─┐└╥┘
q_1: ───┤M├─╫────────────────
┌─┐└╥┘ ║
q_2: ┤M├─╫──╫────────────────
└╥┘ ║ ║ ┌─┐
q_3: ─╫──╫──╫────┤M├─────────
║ ║ ║ └╥┘ ┌─┐
q_4: ─╫──╫──╫─────╫───────┤M├
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q_5: ─╫──╫──╫─┤M├─╫────────╫─
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q_6: ─╫──╫──╫──╫──╫─┤M├────╫─
║ ║ ║ ║ ║ └╥┘┌─┐ ║
q_7: ─╫──╫──╫──╫──╫──╫─┤M├─╫─
║ ║ ║ ║ ║ ║ └╥┘ ║
c: 8/═╩══╩══╩══╩══╩══╩══╩══╩═
0 1 2 3 4 5 6 7
```
## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns
## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.
## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./LICENSE.txt
./MANIFEST.in
./Make.bat
./Makefile
./README.md
./azure-pipelines.yml
./constraints.txt
./docs
./examples
./postBuild
./pyproject.toml
./qiskit
./qiskit/VERSION.txt
./qiskit/__init__.py
./qiskit/algorithms
./qiskit/algorithms/__init__.py
./qiskit/algorithms/algorithm_result.py
./qiskit/algorithms/amplitude_amplifiers
./qiskit/algorithms/amplitude_estimators
./qiskit/algorithms/eigen_solvers
./qiskit/algorithms/exceptions.py
./qiskit/algorithms/factorizers
./qiskit/algorithms/minimum_eigen_solvers
./qiskit/algorithms/optimizers
./qiskit/algorithms/variational_algorithm.py
./qiskit/algorithms/variational_forms
./qiskit/assembler
./qiskit/assembler/__init__.py
./qiskit/assembler/assemble_circuits.py
./qiskit/assembler/assemble_schedules.py
./qiskit/assembler/disassemble.py
./qiskit/assembler/run_config.py
./qiskit/circuit
./qiskit/circuit/__init__.py
./qiskit/circuit/_utils.py
./qiskit/circuit/add_control.py
./qiskit/circuit/barrier.py
./qiskit/circuit/bit.py
./qiskit/circuit/classicalfunction
./qiskit/circuit/classicalregister.py
./qiskit/circuit/controlledgate.py
./qiskit/circuit/delay.py
./qiskit/circuit/duration.py
./qiskit/circuit/equivalence.py
./qiskit/circuit/equivalence_library.py
./qiskit/circuit/exceptions.py
./qiskit/circuit/gate.py
./qiskit/circuit/instruction.py
./qiskit/circuit/instructionset.py
./qiskit/circuit/library
./qiskit/circuit/measure.py
./qiskit/circuit/parameter.py
./qiskit/circuit/parameterexpression.py
./qiskit/circuit/parametertable.py
./qiskit/circuit/parametervector.py
./qiskit/circuit/quantumcircuit.py
./qiskit/circuit/quantumcircuitdata.py
./qiskit/circuit/quantumregister.py
./qiskit/circuit/random
./qiskit/circuit/register.py
./qiskit/circuit/reset.py
./qiskit/circuit/tools
./qiskit/compiler
./qiskit/compiler/__init__.py
./qiskit/compiler/assembler.py
./qiskit/compiler/scheduler.py
./qiskit/compiler/sequencer.py
./qiskit/compiler/transpiler.py
./qiskit/converters
./qiskit/converters/__init__.py
./qiskit/converters/ast_to_dag.py
./qiskit/converters/circuit_to_dag.py
./qiskit/converters/circuit_to_dagdependency.py
./qiskit/converters/circuit_to_gate.py
./qiskit/converters/circuit_to_instruction.py
./qiskit/converters/dag_to_circuit.py
./qiskit/converters/dag_to_dagdependency.py
./qiskit/converters/dagdependency_to_circuit.py
./qiskit/converters/dagdependency_to_dag.py
./qiskit/dagcircuit
./qiskit/dagcircuit/__init__.py
./qiskit/dagcircuit/dagcircuit.py
./qiskit/dagcircuit/dagdependency.py
./qiskit/dagcircuit/dagdepnode.py
./qiskit/dagcircuit/dagnode.py
./qiskit/dagcircuit/exceptions.py
./qiskit/exceptions.py
./qiskit/execute_function.py
./qiskit/extensions
./qiskit/extensions/__init__.py
./qiskit/extensions/exceptions.py
./qiskit/extensions/hamiltonian_gate.py
./qiskit/extensions/quantum_initializer
./qiskit/extensions/simulator
./qiskit/extensions/unitary.py
./qiskit/opflow
./qiskit/opflow/__init__.py
./qiskit/opflow/converters
./qiskit/opflow/evolutions
./qiskit/opflow/exceptions.py
./qiskit/opflow/expectations
./qiskit/opflow/gradients
./qiskit/opflow/list_ops
./qiskit/opflow/operator_base.py
./qiskit/opflow/operator_globals.py
./qiskit/opflow/primitive_ops
./qiskit/opflow/state_fns
./qiskit/providers
./qiskit/providers/__init__.py
./qiskit/providers/backend.py
./qiskit/providers/basebackend.py
./qiskit/providers/basejob.py
./qiskit/providers/baseprovider.py
./qiskit/providers/basicaer
./qiskit/providers/exceptions.py
./qiskit/providers/job.py
./qiskit/providers/jobstatus.py
./qiskit/providers/models
./qiskit/providers/options.py
./qiskit/providers/provider.py
./qiskit/providers/providerutils.py
./qiskit/pulse
./qiskit/pulse/__init__.py
./qiskit/pulse/builder.py
./qiskit/pulse/channels.py
./qiskit/pulse/configuration.py
./qiskit/pulse/exceptions.py
./qiskit/pulse/instruction_schedule_map.py
./qiskit/pulse/instructions
./qiskit/pulse/interfaces.py
./qiskit/pulse/library
./qiskit/pulse/macros.py
./qiskit/pulse/parser.py
./qiskit/pulse/reschedule.py
./qiskit/pulse/schedule.py
./qiskit/pulse/transforms.py
./qiskit/pulse/utils.py
./qiskit/qasm
./qiskit/qasm/__init__.py
./qiskit/qasm/exceptions.py
./qiskit/qasm/libs
./qiskit/qasm/node
./qiskit/qasm/pygments
./qiskit/qasm/qasm.py
./qiskit/qasm/qasmlexer.py
./qiskit/qasm/qasmparser.py
./qiskit/qobj
./qiskit/qobj/__init__.py
./qiskit/qobj/common.py
./qiskit/qobj/converters
./qiskit/qobj/pulse_qobj.py
./qiskit/qobj/qasm_qobj.py
./qiskit/qobj/utils.py
./qiskit/quantum_info
./qiskit/quantum_info/__init__.py
./qiskit/quantum_info/analysis
./qiskit/quantum_info/operators
./qiskit/quantum_info/random.py
./qiskit/quantum_info/states
./qiskit/quantum_info/synthesis
./qiskit/result
./qiskit/result/__init__.py
./qiskit/result/counts.py
./qiskit/result/exceptions.py
./qiskit/result/models.py
./qiskit/result/postprocess.py
./qiskit/result/result.py
./qiskit/result/utils.py
./qiskit/scheduler
./qiskit/scheduler/__init__.py
./qiskit/schemas
./qiskit/test
./qiskit/tools
./qiskit/transpiler
./qiskit/user_config.py
./qiskit/util.py
./qiskit/utils
./qiskit/validation
./qiskit/version.py
./qiskit/visualization
./releasenotes
./releasenotes/config.yaml
./releasenotes/notes
./requirements-dev.txt
./requirements.txt
./setup.py
./test
./test/__init__.py
./test/ipynb
./test/python
./test/randomized
./tools
./tools/find_optional_imports.py
./tools/report_ci_failure.py
./tools/subunit_to_junit.py
./tools/update_fake_backends.py
./tools/verify_headers.py
./tox.ini
```
Turn 1at 16 s180 tokens out5,925 prompt tokens
The user is reporting an issue with `OptimizeSwapBeforeMeasure` pass in Qiskit. It's supposed to commute SWAP gates that precede measurements past the measurements and convert them to classical swaps (retarget the measurement clbit). However, it currently only seems to work for one layer of SWAPs, and needs multiple invocations for more complex SWAP networks. I need to: 1. Find the `OptimizeSwapBeforeMeasure` pass implementation. 2. Reproduce the issue using the provided example. 3. Fix the implementation to handle multiple layers of SWAPs in a single invocation. 4. Verify the fix. Let's start by locating `OptimizeSwapBeforeMeasure`.
TOOL CALL · run_command
{
"command": "grep -rn --include=\"*.py\" \"OptimizeSwapBeforeMeasure\" ."
}Result of run_command 1,888 characters
{
"status": "ok",
"stdout": "./qiskit/transpiler/passes/optimization/__init__.py:22:from .optimize_swap_before_measure import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py:22:class OptimizeSwapBeforeMeasure(TransformationPass):\n./qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py:30: \"\"\"Run the OptimizeSwapBeforeMeasure pass on `dag`.\n./qiskit/transpiler/passes/__init__.py:159:from .optimization import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/preset_passmanagers/level3.py:48:from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/preset_passmanagers/level3.py:181: _meas = [OptimizeSwapBeforeMeasure(), RemoveDiagonalGatesBeforeMeasure()]\n./test/python/transpiler/test_optimize_swap_before_measure.py:13:\"\"\"Test OptimizeSwapBeforeMeasure pass\"\"\"\n./test/python/transpiler/test_optimize_swap_before_measure.py:19:from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, DAGFixedPoint\n./test/python/transpiler/test_optimize_swap_before_measure.py:24:class TestOptimizeSwapBeforeMeasure(QiskitTestCase):\n./test/python/transpiler/test_optimize_swap_before_measure.py:45: pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:71: pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:92: pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:98:class TestOptimizeSwapBeforeMeasureFixedPoint(QiskitTestCase):\n./test/python/transpiler/test_optimize_swap_before_measure.py:121: [OptimizeSwapBeforeMeasure(), DAGFixedPoint()],\n./test/python/transpiler/test_optimize_swap_before_measure.py:149: [OptimizeSwapBeforeMeasure(), DAGFixedPoint()],\n",
"stderr": "",
"exit_code": 0
}Generated tokens 180 tokens · stopped: STOP
<|channel>thought
The user is reporting an issue with `OptimizeSwapBeforeMeasure` pass in Qiskit.
It's supposed to commute SWAP gates that precede measurements past the measurements and convert them to classical swaps (retarget the measurement clbit).
However, it currently only seems to work for one layer of SWAPs, and needs multiple invocations for more complex SWAP networks.
I need to:
1. Find the `OptimizeSwapBeforeMeasure` pass implementation.
2. Reproduce the issue using the provided example.
3. Fix the implementation to handle multiple layers of SWAPs in a single invocation.
4. Verify the fix.
Let's start by locating `OptimizeSwapBeforeMeasure`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "OptimizeSwapBeforeMeasure" .<|"|>}<tool_call|><|tool_response>
Turn 2at 49 s644 tokens out6,703 prompt tokens
The implementation is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`. There is also a test file: `test/python/transpiler/test_optimize_swap_before_measure.py`. Let's first reproduce the bug using the example provided in the issue.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nfrom qiskit import QuantumCircuit\nfrom qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\nprint(\"Original circuit depth:\", Depth().run(circ).value) # Wait, Depth().run(circ) might not work directly.\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"\\nCircuit after one invocation of OptimizeSwapBeforeMeasure:\")\nprint(res_single)\n\n_depth_check = [Depth(), FixedPoint('depth')]\n_opt = [OptimizeSwapBeforeMeasure()]\ndef _opt_control(property_set):\n return not property_set['depth_fixed_point']\n\npm_fixed = PassManager()\npm_fixed.append(_depth_check + _opt, do_while=_opt_control)\nres_fixed = pm_fixed.run(circ)\nprint(\"\\nCircuit after FixedPoint optimization:\")\nprint(res_fixed)\n\n# Check if res_single is the same as res_fixed\n# We can check if any SWAPs remain in res_single but not in res_fixed\n# Or more simply, compare their representation/depth.\nPY\n"
}Result of run_command 4,871 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"exit_code": 1
}
}Generated tokens 644 tokens · stopped: STOP
The implementation is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`.
There is also a test file: `test/python/transpiler/test_optimize_swap_before_measure.py`.
Let's first reproduce the bug using the example provided in the issue.
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
from qiskit import QuantumCircuit
from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print("Original circuit depth:", Depth().run(circ).value) # Wait, Depth().run(circ) might not work directly.
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("\nCircuit after one invocation of OptimizeSwapBeforeMeasure:")
print(res_single)
_depth_check = [Depth(), FixedPoint('depth')]
_opt = [OptimizeSwapBeforeMeasure()]
def _opt_control(property_set):
return not property_set['depth_fixed_point']
pm_fixed = PassManager()
pm_fixed.append(_depth_check + _opt, do_while=_opt_control)
res_fixed = pm_fixed.run(circ)
print("\nCircuit after FixedPoint optimization:")
print(res_fixed)
# Check if res_single is the same as res_fixed
# We can check if any SWAPs remain in res_single but not in res_fixed
# Or more simply, compare their representation/depth.
PY
<|"|>}<tool_call|><|tool_response>
Turn 3at 81 s655 tokens out8,890 prompt tokens
It seems like there's a `ModuleNotFoundError` for some cythonized code in `qiskit.transpiler.passes.routing`. This might be because the environment is not fully built or there's some missing dependency. Wait, the error is `ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'`. Actually, for the specific pass `OptimizeSwapBeforeMeasure`, I might not need all of `qiskit.transpiler.passes`. The `PassManager` and `OptimizeSwapBeforeMeasure` are in `qiskit.transpiler.passes`. The error happens when importing `qiskit`, which imports `qiskit.execute_function`, which imports `qiskit.compiler.transpiler`, which imports `qiskit.transpiler.passes`, which imports `qiskit.transpiler.passes.layout`, and so on. Let's try to import only what's necessary to avoid the broken `stochastic_swap`.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\nfrom qiskit.transpiler.passes.basepass import TransformationPass\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\nprint(\"Original circuit:\")\nprint(circ)\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"\\nCircuit after one invocation of OptimizeSwapBeforeMeasure:\")\nprint(res_single)\nPY\n"
}Result of run_command 4,871 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"exit_code": 1
}
}Generated tokens 655 tokens · stopped: STOP
It seems like there's a `ModuleNotFoundError` for some cythonized code in `qiskit.transpiler.passes.routing`.
This might be because the environment is not fully built or there's some missing dependency.
Wait, the error is `ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'`.
Actually, for the specific pass `OptimizeSwapBeforeMeasure`, I might not need all of `qiskit.transpiler.passes`.
The `PassManager` and `OptimizeSwapBeforeMeasure` are in `qiskit.transpiler.passes`.
The error happens when importing `qiskit`, which imports `qiskit.execute_function`, which imports `qiskit.compiler.transpiler`, which imports `qiskit.transpiler.passes`, which imports `qiskit.transpiler.passes.layout`, and so on.
Let's try to import only what's necessary to avoid the broken `stochastic_swap`.
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
from qiskit.circuit import QuantumCircuit
from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure
from qiskit.transpiler.passes.basepass import TransformationPass
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print("Original circuit:")
print(circ)
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("\nCircuit after one invocation of OptimizeSwapBeforeMeasure:")
print(res_single)
PY
<|"|>}<tool_call|><|tool_response>
Turn 4at 120 s693 tokens out11,088 prompt tokens
Wait, the error is happening inside `qiskit/__init__.py`.
Even if I import `qiskit.circuit`, it might be triggering some imports in `qiskit/__init__.py` if I'm not careful.
Wait, I'm doing `from qiskit.circuit import QuantumCircuit`.
Let's check `qiskit/__init__.py`.
Actually, the error is:
```
File "<stdin>", line 1, in <module>
File "/workspace/qiskit/__init__.py", line 53, in <module>
from qiskit.execute_function import execute # noqa
```
It seems `qiskit/__init__.py` is doing a lot of imports.
I should avoid importing `qiskit` and instead import from the specific submodules.
But `qiskit.circuit` should be fine. Let me check `qiskit/circuit/__init__.py`.
Wait, I'm using `from qiskit.circuit import QuantumCircuit`.
If I use `from qiskit.circuit.quantumcircuit import QuantumCircuit`, it might avoid `qiskit/__init__.py`.
Let's try this:
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nfrom qiskit.circuit.quantumcircuit import QuantumCircuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\nfrom qiskit.transpiler.passes.basepass import TransformationPass\nfrom qiskit.transpiler.passmanager import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\nprint(\"Original circuit:\")\nprint(circ)\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"\\nCircuit after one invocation of OptimizeSwapBeforeMeasure:\")\nprint(res_single)\nPY\n"
}Result of run_command 4,871 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 1, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
"exit_code": 1
}
}Generated tokens 693 tokens · stopped: STOP
Wait, the error is happening inside `qiskit/__init__.py`.
Even if I import `qiskit.circuit`, it might be triggering some imports in `qiskit/__init__.py` if I'm not careful.
Wait, I'm doing `from qiskit.circuit import QuantumCircuit`.
Let's check `qiskit/__init__.py`.
Actually, the error is:
```
File "<stdin>", line 1, in <module>
File "/workspace/qiskit/__init__.py", line 53, in <module>
from qiskit.execute_function import execute # noqa
```
It seems `qiskit/__init__.py` is doing a lot of imports.
I should avoid importing `qiskit` and instead import from the specific submodules.
But `qiskit.circuit` should be fine. Let me check `qiskit/circuit/__init__.py`.
Wait, I'm using `from qiskit.circuit import QuantumCircuit`.
If I use `from qiskit.circuit.quantumcircuit import QuantumCircuit`, it might avoid `qiskit/__init__.py`.
Let's try this:
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
from qiskit.circuit.quantumcircuit import QuantumCircuit
from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure
from qiskit.transpiler.passes.basepass import TransformationPass
from qiskit.transpiler.passmanager import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print("Original circuit:")
print(circ)
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("\nCircuit after one invocation of OptimizeSwapBeforeMeasure:")
print(res_single)
PY
<|"|>}<tool_call|><|tool_response>
Turn 5at 175 s857 tokens out13,324 prompt tokens
This is frustrating. It seems `qiskit/__init__.py` is being imported even when I try to avoid it.
Wait, `from qiskit.circuit.quantumcircuit import QuantumCircuit` should not import `qiskit/__init__.py` unless somewhere in the chain it does.
Wait, if I'm running `python3 - <<'PY'`, I'm starting a new python process.
The `qiskit` folder is in the current directory, so it might be treated as a package and `qiskit/__init__.py` might be executed.
Actually, the stack trace shows:
```
File "<stdin>", line 1, in <module>
File "/workspace/qiskit/__init__.py", line 53, in <module>
from qiskit.execute_function import execute # noqa
```
This means `from qiskit.circuit.quantumcircuit import QuantumCircuit` is triggering `qiskit/__init__.py`.
How?
Maybe `qiskit/circuit/quantumcircuit.py` imports something from `qiskit`?
No, that would be circular.
Actually, it might be that `qiskit` is installed as a site-package and ALSO present as a folder in `/workspace`.
But the trace shows it's using `/workspace/qiskit/__init__.py`.
Wait, why does `from qiskit.circuit.quantumcircuit import QuantumCircuit` trigger `qiskit/__init__.py`?
In Python, if you do `from qiskit.circuit.quantumcircuit import ...`, it should load `qiskit`, then `qiskit.circuit`, then `qiskit.circuit.quantumcircuit`.
Loading `qiskit` means executing `qiskit/__init__.py`.
So I need to avoid importing anything that starts with `qiskit.` if I want to avoid `qiskit/__init__.py`.
But that's impossible if I want to use Qiskit classes.
Wait, why is `qiskit.transpiler.passes.routing.cython.stochastic_swap.utils` missing?
Maybe it's because it's a Cython module that hasn't been compiled.
If I don't need `stochastic_swap`, can I mock it or avoid its import?
The import chain is:
`qiskit/__init__.py` -> `qiskit.execute_function` -> `qiskit.compiler` -> `qiskit.compiler.transpiler` -> `qiskit.transpiler.passes` -> `qiskit.transpiler.passes.layout` -> `qiskit.transpiler.passes.layout.sabre_layout` -> `qiskit.transpiler.passes.routing` -> `qiskit.transpiler.passes.routing.stochastic_swap`.
I want `OptimizeSwapBeforeMeasure` which is in `qiskit.transpiler.passes.optimization.optimize_swap_before_measure`.
If I import it directly, it should avoid the `qiskit.transpiler.passes` `__init__.py` if I'm careful?
No, `from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure` will load `qiskit`, `qiskit.transpiler`, `qiskit.transpiler.passes`, `qiskit.transpiler.passes.optimization`, etc.
And `qiskit.transpiler.passes.__init__.py` is the one that imports `qiskit.transpiler.passes.layout`.
Let's check `qiskit/transpiler/passes/__init__.py`.
TOOL CALL · read_file
{
"filepath": "qiskit/transpiler/passes/__init__.py"
}Result of read_file 3,266 characters
{
"status": "ok",
"filepath": "qiskit/transpiler/passes/__init__.py",
"content": "# This code is part of Qiskit.\n#\n# (C) Copyright IBM 2017, 2018.\n#\n# This code is licensed under the Apache License, Version 2.0. You may\n# obtain a copy of this license in the LICENSE.txt file in the root directory\n# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.\n#\n# Any modifications or derivative works of this code must retain this\n# copyright notice, and modified files need to carry a notice indicating\n# that they have been altered from the originals.\n\n\"\"\"\n===================================================\nTranspiler Passes (:mod:`qiskit.transpiler.passes`)\n===================================================\n\n.. currentmodule:: qiskit.transpiler.passes\n\nLayout Selection (Placement)\n============================\n\n.. autosummary::\n :toctree: ../stubs/\n\n SetLayout\n TrivialLayout\n DenseLayout\n NoiseAdaptiveLayout\n SabreLayout\n CSPLayout\n ApplyLayout\n Layout2qDistance\n EnlargeWithAncilla\n FullAncillaAllocation\n\nRouting\n=======\n\n.. autosummary::\n :toctree: ../stubs/\n\n BasicSwap\n LookaheadSwap\n StochasticSwap\n SabreSwap\n\nBasis Change\n============\n\n.. autosummary::\n :toctree: ../stubs/\n\n Unroller\n Unroll3qOrMore\n Decompose\n UnrollCustomDefinitions\n BasisTranslator\n\nOptimizations\n=============\n\n.. autosummary::\n :toctree: ../stubs/\n\n Optimize1qGates\n Optimize1qGatesDecomposition\n Collect2qBlocks\n ConsolidateBlocks\n CXCancellation\n CommutationAnalysis\n CommutativeCancellation\n RemoveDiagonalGatesBeforeMeasure\n RemoveResetInZeroState\n CrosstalkAdaptiveSchedule\n TemplateOptimization\n\nScheduling\n=============\n\n.. autosummary::\n :toctree: ../stubs/\n\n ALAPSchedule\n ASAPSchedule\n\nCircuit Analysis\n================\n\n.. autosummary::\n :toctree: ../stubs/\n\n Width\n Depth\n Size\n CountOps\n CountOpsLongestPath\n NumTensorFactors\n DAGLongestPath\n\nSynthesis\n=============\n\n.. autosummary::\n :toctree: ../stubs/\n\n UnitarySynthesis\n\nAdditional Passes\n=================\n\n.. autosummary::\n :toctree: ../stubs/\n\n CheckMap\n CheckCXDirection\n CXDirection\n MergeAdjacentBarriers\n BarrierBeforeFinalMeasurements\n RemoveFinalMeasurements\n DAGFixedPoint\n FixedPoint\n\"\"\"\n\n# layout selection (placement)\nfrom .layout import SetLayout\nfrom .layout import TrivialLayout\nfrom .layout import DenseLayout\nfrom .layout import NoiseAdaptiveLayout\nfrom .layout import SabreLayout\nfrom .layout import CSPLayout\nfrom .layout import ApplyLayout\nfrom .layout import Layout2qDistance\nfrom .layout import EnlargeWithAncilla\nfrom .layout import FullAncillaAllocation\n\n# routing\nfrom .routing import BasicSwap\nfrom .routing import LayoutTransformation\nfrom .routing import LookaheadSwap\nfrom .routing import StochasticSwap\nfrom .routing import SabreSwap\n\n# basis change\nfrom .basis import Decompose\nfrom .basis import Unroller\nfrom .basis import UnrollCustomDefinitions\nfrom .basis import Unroll3qOrMore\nfrom .basis import BasisTranslator\n",
"start_line": 1,
"end_line": 150,
"total_lines": 193,
"is_truncated": true
}Generated tokens 857 tokens · stopped: STOP
This is frustrating. It seems `qiskit/__init__.py` is being imported even when I try to avoid it.
Wait, `from qiskit.circuit.quantumcircuit import QuantumCircuit` should not import `qiskit/__init__.py` unless somewhere in the chain it does.
Wait, if I'm running `python3 - <<'PY'`, I'm starting a new python process.
The `qiskit` folder is in the current directory, so it might be treated as a package and `qiskit/__init__.py` might be executed.
Actually, the stack trace shows:
```
File "<stdin>", line 1, in <module>
File "/workspace/qiskit/__init__.py", line 53, in <module>
from qiskit.execute_function import execute # noqa
```
This means `from qiskit.circuit.quantumcircuit import QuantumCircuit` is triggering `qiskit/__init__.py`.
How?
Maybe `qiskit/circuit/quantumcircuit.py` imports something from `qiskit`?
No, that would be circular.
Actually, it might be that `qiskit` is installed as a site-package and ALSO present as a folder in `/workspace`.
But the trace shows it's using `/workspace/qiskit/__init__.py`.
Wait, why does `from qiskit.circuit.quantumcircuit import QuantumCircuit` trigger `qiskit/__init__.py`?
In Python, if you do `from qiskit.circuit.quantumcircuit import ...`, it should load `qiskit`, then `qiskit.circuit`, then `qiskit.circuit.quantumcircuit`.
Loading `qiskit` means executing `qiskit/__init__.py`.
So I need to avoid importing anything that starts with `qiskit.` if I want to avoid `qiskit/__init__.py`.
But that's impossible if I want to use Qiskit classes.
Wait, why is `qiskit.transpiler.passes.routing.cython.stochastic_swap.utils` missing?
Maybe it's because it's a Cython module that hasn't been compiled.
If I don't need `stochastic_swap`, can I mock it or avoid its import?
The import chain is:
`qiskit/__init__.py` -> `qiskit.execute_function` -> `qiskit.compiler` -> `qiskit.compiler.transpiler` -> `qiskit.transpiler.passes` -> `qiskit.transpiler.passes.layout` -> `qiskit.transpiler.passes.layout.sabre_layout` -> `qiskit.transpiler.passes.routing` -> `qiskit.transpiler.passes.routing.stochastic_swap`.
I want `OptimizeSwapBeforeMeasure` which is in `qiskit.transpiler.passes.optimization.optimize_swap_before_measure`.
If I import it directly, it should avoid the `qiskit.transpiler.passes` `__init__.py` if I'm careful?
No, `from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure` will load `qiskit`, `qiskit.transpiler`, `qiskit.transpiler.passes`, `qiskit.transpiler.passes.optimization`, etc.
And `qiskit.transpiler.passes.__init__.py` is the one that imports `qiskit.transpiler.passes.layout`.
Let's check `qiskit/transpiler/passes/__init__.py`.
<channel|><|tool_call>call:read_file{filepath:<|"|>qiskit/transpiler/passes/__init__.py<|"|>}<tool_call|><|tool_response>
Turn 6at 220 s746 tokens out15,187 prompt tokens
Yes, `from .routing import StochasticSwap` is there. If I want to avoid this, I can a) avoid importing from `qiskit.transpiler.passes`, or b) monkeypatch `sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils']` before it's imported. Wait, I can just avoid `from qiskit import ...` and instead import exactly what I need. But `PassManager` is in `qiskit.transpiler.passmanager`. Let's see if I can just import `OptimizeSwapBeforeMeasure` and use it without `PassManager` if needed, or just run the pass's `run` method manually. Actually, `TransformationPass.run` takes a DAG. So I'd need to convert the circuit to a DAG. Let's try to run the reproduction with a little trick to avoid the broken import.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nimport sys\nfrom unittest.mock import MagicMock\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()\n\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\nprint(\"Original circuit: \\n\", circ)\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"\\nCircuit after one invocation of OptimizeSwapBeforeMeasure: \\n\", res_single)\n\n# To check if it's optimized, we can check how many SWAP gates are left.\ndef count_swaps(circuit):\n return sum(1 for instr in circuit.data if instr.operation.name == 'swap')\n\nprint(\"\\nNumber of SWAPs in original: \", count_swaps(circ))\nprint(\"Number of SWAPs after one invocation: \", count_swaps(res_single))\nPY\n"
}Result of run_command 4,873 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 5, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 29, in <module>\n from .cython.stochastic_swap.swap_trial import swap_trial\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 5, in <module>\n File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n from qiskit.execute_function import execute # noqa\n File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n from qiskit.compiler import transpile, assemble, schedule\n File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n from .transpiler import transpile\n File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n from qiskit.transpiler.passes import ApplyLayout\n File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n from .layout import SetLayout\n File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n from .sabre_layout import SabreLayout\n File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n from qiskit.transpiler.passes.routing import SabreSwap\n File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n from .stochastic_swap import StochasticSwap\n File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 29, in <module>\n from .cython.stochastic_swap.swap_trial import swap_trial\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'\n",
"exit_code": 1
}
}Generated tokens 746 tokens · stopped: STOP
Yes, `from .routing import StochasticSwap` is there.
If I want to avoid this, I can a) avoid importing from `qiskit.transpiler.passes`, or b) monkeypatch `sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils']` before it's imported.
Wait, I can just avoid `from qiskit import ...` and instead import exactly what I need. But `PassManager` is in `qiskit.transpiler.passmanager`.
Let's see if I can just import `OptimizeSwapBeforeMeasure` and use it without `PassManager` if needed, or just run the pass's `run` method manually.
Actually, `TransformationPass.run` takes a DAG.
So I'd need to convert the circuit to a DAG.
Let's try to run the reproduction with a little trick to avoid the broken import.
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
import sys
from unittest.mock import MagicMock
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()
from qiskit.circuit import QuantumCircuit
from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print("Original circuit: \n", circ)
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("\nCircuit after one invocation of OptimizeSwapBeforeMeasure: \n", res_single)
# To check if it's optimized, we can check how many SWAP gates are left.
def count_swaps(circuit):
return sum(1 for instr in circuit.data if instr.operation.name == 'swap')
print("\nNumber of SWAPs in original: ", count_swaps(circ))
print("Number of SWAPs after one invocation: ", count_swaps(res_single))
PY
<|"|>}<tool_call|><|tool_response>
Turn 7at 310 s635 tokens out8,756 prompt tokens
It seems there are multiple cythonized modules in `qiskit.transpiler.passes.routing.cython.stochastic_swap`. I'll try a more aggressive mocking of `qiskit.transpiler.passes.routing`.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nimport sys\nfrom unittest.mock import MagicMock\nsys.modules['qiskit.transpiler.passes.routing'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()\n\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\nprint(\"Original circuit swap count:\", sum(1 for instr in circ.data if instr.operation.name == 'swap'))\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"Circuit after one invocation swap count:\", sum(1 for instr in res_single.data if instr.operation.name == 'swap'))\nPY\n"
}Result of run_command 2,471 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 41, in <module>\n File \"<stdin>\", line 41, in <genexpr>\nAttributeError: 'tuple' object has no attribute 'operation'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 41, in <module>\n File \"<stdin>\", line 41, in <genexpr>\nAttributeError: 'tuple' object has no attribute 'operation'\n",
"exit_code": 1
}
}Generated tokens 635 tokens · stopped: STOP
It seems there are multiple cythonized modules in `qiskit.transpiler.passes.routing.cython.stochastic_swap`.
I'll try a more aggressive mocking of `qiskit.transpiler.passes.routing`.
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
import sys
from unittest.mock import MagicMock
sys.modules['qiskit.transpiler.passes.routing'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()
from qiskit.circuit import QuantumCircuit
from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print("Original circuit swap count:", sum(1 for instr in circ.data if instr.operation.name == 'swap'))
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("Circuit after one invocation swap count:", sum(1 for instr in res_single.data if instr.operation.name == 'swap'))
PY
<|"|>}<tool_call|><|tool_response>
Turn 8at 326 s296 tokens out10,140 prompt tokens
Ah, the way I'm counting swaps is wrong for the version of Qiskit in the repo. `circ.data` seems to be a list of tuples. Let's check what `circ.data` contains.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nimport sys\nfrom unittest.mock import MagicMock\nsys.modules['qiskit.transpiler.passes.routing'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()\n\nfrom qiskit.circuit import QuantumCircuit\nprint(f\"Type of circ.data[0]: {type(QuantumCircuit(1).swap(0,0).data[0])}\")\nprint(f\"Contents of circ.data[0]: {QuantumCircuit(1).swap(0,0).data[0]}\")\nPY\n"
}Result of run_command 3,459 characters
{
"status": "error",
"error_type": "CommandError",
"error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 10, in <module>\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 2202, in swap\n return self.append(SwapGate(), [qubit1, qubit2], [])\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 933, in append\n instructions.add(self._append(instruction, qarg, carg), qarg, carg)\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 956, in _append\n self._check_dups(qargs)\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 1035, in _check_dups\n raise CircuitError(\"duplicate qubit arguments\")\nqiskit.circuit.exceptions.CircuitError: 'duplicate qubit arguments'\n",
"details": {
"stdout": "",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\nTraceback (most recent call last):\n File \"<stdin>\", line 10, in <module>\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 2202, in swap\n return self.append(SwapGate(), [qubit1, qubit2], [])\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 933, in append\n instructions.add(self._append(instruction, qarg, carg), qarg, carg)\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 956, in _append\n self._check_dups(qargs)\n File \"/workspace/qiskit/circuit/quantumcircuit.py\", line 1035, in _check_dups\n raise CircuitError(\"duplicate qubit arguments\")\nqiskit.circuit.exceptions.CircuitError: 'duplicate qubit arguments'\n",
"exit_code": 1
}
}Generated tokens 296 tokens · stopped: STOP
Ah, the way I'm counting swaps is wrong for the version of Qiskit in the repo.
`circ.data` seems to be a list of tuples.
Let's check what `circ.data` contains.
<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
import sys
from unittest.mock import MagicMock
sys.modules['qiskit.transpiler.passes.routing'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()
from qiskit.circuit import QuantumCircuit
print(f"Type of circ.data[0]: {type(QuantumCircuit(1).swap(0,0).data[0])}")
print(f"Contents of circ.data[0]: {QuantumCircuit(1).swap(0,0).data[0]}")
PY
<|"|>}<tool_call|><|tool_response>
Turn 9at 360 s695 tokens out11,515 prompt tokens
Silly me, `swap(0, 0)` is not allowed. Anyway, let's just use `instr[0].name` if `instr` is a tuple. Actually, usually it's `(instruction, qargs, cargs)`. So `instr[0].name` should be the operation name. Let's try again.
TOOL CALL · run_command
{
"command": "python3 - <<'PY'\nimport sys\nfrom unittest.mock import MagicMock\nsys.modules['qiskit.transpiler.passes.routing'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()\nsys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()\n\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\n\ndef count_swaps(circuit):\n count = 0\n for instr in circuit.data:\n # instr is (operation, qargs, cargs)\n if instr[0].name == 'swap':\n count += 1\n return count\n\nprint(\"Original circuit swap count:\", count_swaps(circ))\n\npm_single = PassManager([OptimizeSwapBeforeMeasure()])\nres_single = pm_single.run(circ)\nprint(\"Circuit after one invocation swap count:\", count_swaps(res_single))\nPY\n"
}Result of run_command 1,128 characters
{
"status": "ok",
"stdout": "Original circuit swap count: 25\nCircuit after one invocation swap count: 23\n",
"stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n import pkg_resources\n",
"exit_code": 0
}Generated tokens 695 tokens · stopped: STOP
Silly me, `swap(0, 0)` is not allowed.
Anyway, let's just use `instr[0].name` if `instr` is a tuple.
Actually, usually it's `(instruction, qargs, cargs)`.
So `instr[0].name` should be the operation name.
Let's try again.<channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY'
import sys
from unittest.mock import MagicMock
sys.modules['qiskit.transpiler.passes.routing'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'] = MagicMock()
sys.modules['qiskit.transpiler.passes.routing.cython.stochastic_swap.swap_trial'] = MagicMock()
from qiskit.circuit import QuantumCircuit
from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure
from qiskit.transpiler import PassManager
circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
def count_swaps(circuit):
count = 0
for instr in circuit.data:
# instr is (operation, qargs, cargs)
if instr[0].name == 'swap':
count += 1
return count
print("Original circuit swap count:", count_swaps(circ))
pm_single = PassManager([OptimizeSwapBeforeMeasure()])
res_single = pm_single.run(circ)
print("Circuit after one invocation swap count:", count_swaps(res_single))
PY
<|"|>}<tool_call|><|tool_response>
Turn 10at 372 s125 tokens out12,560 prompt tokens
Okay! It's reproduced. Original swap count: 25. After one invocation: 23. It only removed 2 SWAPs. Since the SWAPs are all before the measurements, a complete optimization should remove ALL of them (by retargeting the measurements). So the expected count after one invocation should be 0. Now let's examine the implementation of `OptimizeSwapBeforeMeasure`.
TOOL CALL · read_file
{
"filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py"
}Result of read_file 3,047 characters
{
"status": "ok",
"filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py",
"content": "# This code is part of Qiskit.\n#\n# (C) Copyright IBM 2017, 2019.\n#\n# This code is licensed under the Apache License, Version 2.0. You may\n# obtain a copy of this license in the LICENSE.txt file in the root directory\n# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.\n#\n# Any modifications or derivative works of this code must retain this\n# copyright notice, and modified files need to carry a notice indicating\n# that they have been altered from the originals.\n\n\n\"\"\"Remove the swaps followed by measurement (and adapt the measurement).\"\"\"\n\nfrom qiskit.circuit import Measure\nfrom qiskit.circuit.library.standard_gates import SwapGate\nfrom qiskit.transpiler.basepasses import TransformationPass\nfrom qiskit.dagcircuit import DAGCircuit\n\n\nclass OptimizeSwapBeforeMeasure(TransformationPass):\n \"\"\"Remove the swaps followed by measurement (and adapt the measurement).\n\n Transpiler pass to remove swaps in front of measurements by re-targeting\n the classical bit of the measure instruction.\n \"\"\"\n\n def run(self, dag):\n \"\"\"Run the OptimizeSwapBeforeMeasure pass on `dag`.\n\n Args:\n dag (DAGCircuit): the DAG to be optimized.\n\n Returns:\n DAGCircuit: the optimized DAG.\n \"\"\"\n swaps = dag.op_nodes(SwapGate)\n for swap in swaps:\n final_successor = []\n for successor in dag.successors(swap):\n final_successor.append(successor.type == 'out' or (successor.type == 'op' and\n successor.op.name == 'measure'))\n if all(final_successor):\n # the node swap needs to be removed and, if a measure follows, needs to be adapted\n swap_qargs = swap.qargs\n measure_layer = DAGCircuit()\n for qreg in dag.qregs.values():\n measure_layer.add_qreg(qreg)\n for creg in dag.cregs.values():\n measure_layer.add_creg(creg)\n for successor in list(dag.successors(swap)):\n if successor.type == 'op' and successor.op.name == 'measure':\n # replace measure node with a new one, where qargs is set with the \"other\"\n # swap qarg.\n dag.remove_op_node(successor)\n old_measure_qarg = successor.qargs[0]\n new_measure_qarg = swap_qargs[swap_qargs.index(old_measure_qarg) - 1]\n measure_layer.apply_operation_back(Measure(), [new_measure_qarg],\n [successor.cargs[0]])\n dag.compose(measure_layer)\n dag.remove_op_node(swap)\n return dag",
"start_line": 1,
"end_line": 63,
"total_lines": 63,
"is_truncated": false
}Generated tokens 125 tokens · stopped: STOP
Okay! It's reproduced.
Original swap count: 25.
After one invocation: 23.
It only removed 2 SWAPs.
Since the SWAPs are all before the measurements, a complete optimization should remove ALL of them (by retargeting the measurements).
So the expected count after one invocation should be 0.
Now let's examine the implementation of `OptimizeSwapBeforeMeasure`.<channel|><|tool_call>call:read_file{filepath:<|"|>qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py<|"|>}<tool_call|><|tool_response>
Patch, tests and logs
Final code change Included
Test output Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test errors Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test report (JUnit) Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Agent log Included
[ 0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
[ 0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository Qiskit/qiskit-terra.
[ 14.1s] 💭 (643 chars) "The user is reporting an issue with `OptimizeSwapBeforeMeasure` pass in Qiskit.
It's supposed to commute SWAP gates that..."
[ 14.1s] 🔧 run_command grep -rn --include="*.py" "OptimizeSwapBeforeMeasure" .
[ 14.2s] → ./qiskit/transpiler/passes/optimization/__init__.py:22:from .optimize_swap_before_measure import
OptimizeSwapBeforeMeasu
[ 47.0s] 💭 (259 chars) "The implementation is in
`qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`.
There is also a test f..."
[ 47.0s] 🔧 run_command (55 lines) python3 - <<'PY'
[ 49.6s] → error (exit 0):
[ 79.5s] 💭 (836 chars) "It seems like there's a `ModuleNotFoundError` for some cythonized code in
`qiskit.transpiler.passes.routing`.
This might..."
[ 79.5s] 🔧 run_command (42 lines) python3 - <<'PY'
[ 81.1s] → error (exit 0):
[ 118.0s] 💭 (856 chars) "Wait, the error is happening inside `qiskit/__init__.py`.
Even if I import `qiskit.circuit`, it might be triggering some..."
[ 118.0s] 🔧 run_command (42 lines) python3 - <<'PY'
[ 119.6s] → error (exit 0):
[ 173.8s] 💭 (2666 chars) "This is frustrating. It seems `qiskit/__init__.py` is being imported even when I try to
avoid it.
Wait, `from qiskit.cir..."
[ 173.8s] 📖 read_file (qiskit/transpiler/passes/__init__.py)
[ 173.8s] ✓ {'status': 'ok', 'filepath': 'qiskit/transpiler/passes/__init__.py', 'content': '# This code is part of
Qiskit.\n#\n# (C…
[ 218.4s] 💭 (727 chars) "Yes, `from .routing import StochasticSwap` is there.
If I want to avoid this, I can a) avoid importing from `qiskit.tra..."
[ 218.4s] 🔧 run_command (50 lines) python3 - <<'PY'
[ 220.0s] → error (exit 0):
[ 308.1s] 💭 (183 chars) "It seems there are multiple cythonized modules in
`qiskit.transpiler.passes.routing.cython.stochastic_swap`.
I'll try a..."
[ 308.1s] 🔧 run_command (47 lines) python3 - <<'PY'
[ 309.7s] → error (exit 0):
[ 324.0s] 💭 (159 chars) "Ah, the way I'm counting swaps is wrong for the version of Qiskit in the repo.
`circ.data` seems to be a list of tuples...."
[ 324.0s] 🔧 run_command (13 lines) python3 - <<'PY'
[ 325.6s] → error (exit 0):
[ 358.9s] 💭 (222 chars) "Silly me, `swap(0, 0)` is not allowed.
Anyway, let's just use `instr[0].name` if `instr` is a tuple.
Actually, usually ..."
[ 358.9s] 🔧 run_command (55 lines) python3 - <<'PY'
[ 360.6s] → Original circuit swap count: 25
[ 370.3s] 💭 (358 chars) "Okay! It's reproduced.
Original swap count: 25.
After one invocation: 23.
It only removed 2 SWAPs.
Since the SWAPs are a..."
[ 370.3s] 📖 read_file (qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py)
[ 370.3s] ✓ {'status': 'ok', 'filepath': 'qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py',
'content': '# This…
Native result row
{
"agent_error": "Agent exceeded session timeout (7.5 min)",
"duration_seconds": 453.96,
"error": "Empty agent patch",
"grade": {
"error": "Empty agent patch",
"resolved": false,
"strict_clean_patch": false,
"test_exit_code": -1
},
"instance_id": "qiskit__qiskit-terra-5833",
"pass_idx": 0,
"patch_chars": 0,
"phase1_seconds": 453.96,
"repo": "Qiskit/qiskit-terra",
"request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/qiskit__qiskit-terra-5833__p0__r6.jsonl",
"resolved": false,
"rollout_idx": 6,
"run_key": "qiskit__qiskit-terra-5833__p0__r6",
"strict_clean_patch": false,
"tool_calls": 10,
"total_llm_calls": 10,
"trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_qiskit__qiskit-terra-5833__p0__r6.json"
}