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Add __repr__ methods to core Qiskit classes#16148

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yhwang wants to merge 2 commits intoQiskit:mainfrom
yhwang:add-repr
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Add __repr__ methods to core Qiskit classes#16148
yhwang wants to merge 2 commits intoQiskit:mainfrom
yhwang:add-repr

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@yhwang yhwang commented May 6, 2026

Implements repr for Gate, ControlledGate, QuantumCircuit, PassManager, StatevectorSampler, and StatevectorEstimator.

All implementations use the non-eval-able <ClassName ...> format as discussed in issue #8594, providing human-readable debugging information without attempting to be eval-able.

Includes comprehensive unit tests (26 tests) and release notes.

One thing worth mentioning is that the changes in this PR are derived from this closed PR. Therefore, Richard Rodenbusch is added as the co-author of the commit.

Fixes #8594

AI/LLM disclosure

  • I didn't use LLM tooling, or only used it privately.
  • I used the following tool to help write this PR description:
  • I used the following tool to generate or modify code: IBM Bob

Implements __repr__ for Gate, ControlledGate, QuantumCircuit,
PassManager, StatevectorSampler, and StatevectorEstimator.

All implementations use the non-eval-able <ClassName ...> format
as discussed in issue Qiskit#8594, providing human-readable debugging
information without attempting to be eval-able.

Includes comprehensive unit tests (26 tests) and release notes.

Fixes Qiskit#8594

Co-authored-by: Richard Rodenbusch <rrodenbusch@gmail.com>
Signed-off-by: Yihong Wang <yh.wang@ibm.com>
@yhwang yhwang requested review from a team as code owners May 6, 2026 00:38
@yhwang yhwang requested a review from mtreinish May 6, 2026 00:38
@qiskit-bot qiskit-bot added the Community PR PRs from contributors that are not 'members' of the Qiskit repo label May 6, 2026
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Add good __repr__ methods to all public classes

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