Description

hugovk

opened on Jul 25, 2026

Issue body actions

Feature or enhancement

Proposal:

Following on from 3.15's #137855, further improvements can be made to import times in 3.16.

And rather than deferring imports, we can use lazy imports.

Linked PRs

• gh-154675: reorganize some imports in importlib #154657
• gh-154675: Improve import performance of tkinter library with lazy imports #148409
• gh-154675: Use lazy imports in pdb, bdb, code #156567
• gh-154675: Use lazy imports in json package #156801
• gh-154675: pprint use lazy imports #156803
• gh-154675: Avoid importing inspect when creating a slotted dataclass #156841

Activity

1. hugovk

   added

   type-featureA feature request or enhancementA feature request or enhancement

   performancePerformance or resource usagePerformance or resource usage

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   on Jul 25, 2026
2. brettcannon

   added a commit that references this issue on Jul 27, 2026

   gh-154675: reorganize some imports in importlib (#154657)

   0284ce8
3. hugovk

   added sub-issues on Jul 30, 2026

   • shutil: avoid importing bz2, lzma and compression.zstd just to probe availability #154904
   • Use lazy imports in argparse #154638
4. mbeijen

   added a commit that references this issue on Aug 14, 2026

   pythongh-154675: reorganize some imports in importlib (python#154657)

   5f5b57c
5. hugovk

   added a sub-issue on Aug 25, 2026

   • Speed up import rlcompleter by deferring inspect and re #156363
6. hugovk

   added sub-issues on Sep 1, 2026

   • Optimize pdb with asyncio gating #156774
   • Optimize logging package import overhead with lazy imports #156777
7. brittanyrey

   added 3 commits that reference this issue on Sep 1, 2026

   pythongh-154675: Use lazy imports in `json.tool`

   6cf2b8b

   pythongh-154675: Use lazy imports in `json.tool`

   4e6d471

   pythongh-154675: Use lazy imports in `json.tool`

   db14e0d
8. hugovk

   added

   3.16new features, bugs and security fixesnew features, bugs and security fixes

   on Sep 8, 2026
9. hugovk

   added a sub-issue on Oct 18, 2026

   • Lazy load urllib modules in saxutils #159675
10. hugovk

    added a commit that references this issue on Oct 21, 2026

    gh-154675: Use lazy imports in `pdb`, `bdb`, `code` (#156567)

    00348be
11. hugovk

    added a sub-issue on Nov 8, 2026

    • platform: import _wmi on first use #161513
12. aisk

    added a sub-issue on Nov 9, 2026

    • Windows: avoid importing encodings._win_cp_codecs and time at startup #161510

Issue actions