chore: drop Python 3.8/3.9 support, bump minimum to 3.10

[wanghan-iapcm]

Python 3.8 reached EOL in October 2024 and 3.9 in October 2025. The lmdb package is also broken on Python 3.8 CI runners. Update classifiers, requires-python, CI matrix, docs, and remove legacy Python <3.8 fallbacks.

Summary by CodeRabbit

• Chores

  • Raised minimum supported Python to 3.10 and removed older 3.8/3.9 support.
  • Added official support for newer Python versions (including 3.12/3.13).
  • Updated CI workflows and test matrix to target current Python versions.
  • Simplified compatibility markers and optional dependency declarations.
  • Adjusted internal compatibility imports to align with newer Python runtimes.

• Documentation

  • Updated installation docs and README to reflect Python 3.10+ requirement.

[codspeed-hq]

Merging this PR will not alter performance

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

✅ 2 untouched benchmarks

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_{Comparing wanghan-iapcm:fix-py-to-310 (ee3221a) with master (26171f2)}

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b2d69a21-0687-46f0-a3fd-4a0a119d4257

📥 Commits

Reviewing files that changed from the base of the PR and between 59f86e2 and ee3221a.

📒 Files selected for processing (4)

• dpdata/driver.py
• dpdata/plugins/ase.py
• dpdata/system.py
• dpdata/utils.py

---

📝 Walkthrough

Walkthrough

Raises the minimum supported Python to 3.10 across packaging, docs, and CI; updates CI matrices and workflow Python versions; removes legacy importlib_metadata/typing_extensions conditionals; and moves several typing imports to collections.abc or to TYPE_CHECKING-only imports.

Changes

Cohort / File(s)	Summary
Configuration & Packaging pyproject.toml, tests/plugin/pyproject.toml, .github/workflows/test.yml, .github/workflows/pub-pypi.yml, .github/workflows/test_import.yml	Bumped requires-python to >=3.10, updated PyPI classifiers (removed 3.8/3.9, added 3.12/3.13), removed conditional importlib_metadata/typing_extensions markers, simplified optional extras, and updated CI workflow Python versions/test matrix.
Documentation README.md, docs/installation.md	Updated installation/docs to state Python 3.10+ as the minimum supported Python version.
Typing import modernizations dpdata/driver.py, dpdata/plugins/ase.py, dpdata/system.py, dpdata/utils.py	Moved Callable/Generator/Iterable type imports to collections.abc or into TYPE_CHECKING guards, removing runtime dependency on older typing exports; no runtime behavior or public APIs changed.
Plugin system import dpdata/plugins/__init__.py	Removed fallback to external importlib_metadata; now imports metadata from the stdlib importlib unconditionally.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• chore: drop Python 3.8/3.9 support, bump minimum to 3.10 #958: Nearly identical changes bumping Python minimum, CI matrices, packaging classifiers, and replacing legacy typing/importlib fallbacks.
• breaking: drop python 3.7 #783: Coordinated updates to supported Python versions and typing/importlib adjustments across similar files.
• docs: bump minimal dpdata version to 3.8 in README #785: Earlier documentation bump of README's minimum Python version (related docs change).

Suggested reviewers

• njzjz
• wanghan-iapcm

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and clearly summarizes the main change: dropping Python 3.8/3.9 support and bumping the minimum supported version to 3.10, which aligns with all the changeset modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.63%. Comparing base (26171f2) to head (ee3221a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #958      +/-   ##
==========================================
+ Coverage   86.37%   86.63%   +0.26%     
==========================================
  Files          86       86              
  Lines        8086     8006      -80     
==========================================
- Hits         6984     6936      -48     
+ Misses       1102     1070      -32     

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[coderabbitai]

🧹 Nitpick comments (1)

dpdata/plugins/__init__.py (1)

16-19: Consider removing the now-unnecessary try/except block.

The group parameter for metadata.entry_points() was added in Python 3.10. Since this PR raises the minimum Python version to 3.10, the TypeError fallback path will never be executed.

♻️ Suggested simplification

-try:
-    eps = metadata.entry_points(group="dpdata.plugins")
-except TypeError:
-    eps = metadata.entry_points().get("dpdata.plugins", [])
+eps = metadata.entry_points(group="dpdata.plugins")

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@dpdata/plugins/__init__.py` around lines 16 - 19, Remove the now-unnecessary
try/except around metadata.entry_points: directly call
metadata.entry_points(group="dpdata.plugins") and assign its result to eps
(remove the TypeError fallback that calls
metadata.entry_points().get("dpdata.plugins", [])). Update references to eps as
before; the unique symbol to change is the metadata.entry_points call that
currently lives in the try block and the eps assignment that follows.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@dpdata/plugins/__init__.py`:
- Around line 16-19: Remove the now-unnecessary try/except around
metadata.entry_points: directly call
metadata.entry_points(group="dpdata.plugins") and assign its result to eps
(remove the TypeError fallback that calls
metadata.entry_points().get("dpdata.plugins", [])). Update references to eps as
before; the unique symbol to change is the metadata.entry_points call that
currently lives in the try block and the eps assignment that follows.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4c38ed86-2283-4621-96f7-a5c12d0ddcd1

📥 Commits

Reviewing files that changed from the base of the PR and between 26171f2 and 13ac005.

📒 Files selected for processing (10)

• .github/workflows/test.yml
• README.md
• docs/installation.md
• dpdata/driver.py
• dpdata/plugins/__init__.py
• dpdata/plugins/ase.py
• dpdata/system.py
• dpdata/utils.py
• pyproject.toml
• tests/plugin/pyproject.toml