cudf-classic and CI cleanups for NumPy/CuPy 2/14 version bump

[mroeschke]

Description

Follow up to #22962

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: fec899f9-b469-4b35-aa5d-e58e6a5057fb

📥 Commits

Reviewing files that changed from the base of the PR and between 939c8b5 and dbd773c.

📒 Files selected for processing (5)

• python/cudf/cudf/api/extensions/accessor.py
• python/cudf/cudf/core/frame.py
• python/cudf/cudf/core/indexed_frame.py
• python/cudf/cudf/core/series.py
• python/cudf/cudf/tests/test_doctests.py

💤 Files with no reviewable changes (1)

• python/cudf/cudf/tests/test_doctests.py

✅ Files skipped from review due to trivial changes (4)

• python/cudf/cudf/core/frame.py
• python/cudf/cudf/core/series.py
• python/cudf/cudf/api/extensions/accessor.py
• python/cudf/cudf/core/indexed_frame.py

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📝 Walkthrough

Summary by CodeRabbit

• Bug Fixes
  • Improved compatibility handling so the pandas-compat test matrix runs consistently across supported environments.
  • Removed version-specific interval and doctest workarounds to align results with current NumPy behavior.
• Tests
  • Updated the test runner to execute non-serial and profiler checks in separate passes per compatibility version.
• Documentation
  • Refreshed doctest/docstring example outputs to consistently show NumPy scalar formatting (e.g., np.int64(...), np.float64(...)).

Walkthrough

The PR removes version-based compatibility branches from CI and tests, updates a NumPy wrapper import to be unconditional, and refreshes several docstring examples to show NumPy scalar formatting.

Changes

Remove version gating and refresh doctest output text

Layer / File(s)	Summary
Version-gated compatibility code removed ci/cudf_pandas_scripts/run_tests.sh, python/cudf/cudf/pandas/_wrappers/numpy.py, python/cudf/cudf/tests/indexes/test_interval.py, python/cudf/cudf/tests/test_doctests.py	The pandas-compat CI matrix runs for every configured version, flagsobj is imported unconditionally, interval tests drop NumPy-version dtype casting, and doctest setup removes the version-conditional printoptions path and skip constant.
Docstring outputs updated python/cudf/cudf/api/extensions/accessor.py, python/cudf/cudf/core/frame.py, python/cudf/cudf/core/indexed_frame.py, python/cudf/cudf/core/series.py	Accessor, frame, indexed frame, and series docstrings update example outputs from plain Python scalars to np.int64(...) and np.float64(...) forms.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• rapidsai/cudf#22189: Both PRs modify ci/cudf_pandas_scripts/run_tests.sh’s pandas-compat CI matrix execution and the version_lte gating logic.
• rapidsai/cudf#22706: Both PRs modify python/cudf/cudf/tests/test_doctests.py, changing doctest collection/output handling.

Suggested reviewers

• jameslamb
• wence-
• galipremsagar
• KyleFromNVIDIA

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 69.23% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the main theme of the changes: NumPy/CuPy version-bump cleanup across CI and cudf-classic docs.
Description check	✅ Passed	The description is clearly related as a follow-up to the referenced cudf PR and the changeset.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[bdice]

Do you want to fix this TODO while you're here? If it's hard, it's fine to defer on that.

[mroeschke]

Appeared straightforward enough with an agent. Done in e50cbcb

[mroeschke]

/merge