Feature or enhancement

Proposal:

As noted in https://discuss.python.org/t/deferred-computation-evalution-for-toplevels-imports-and-dataclasses/34173, typing isn't the slowest stdlib module in terms of import time, but neither is it one of the quickest. We should speed it up, if possible.

Links to previous discussion of this feature:

https://discuss.python.org/t/deferred-computation-evalution-for-toplevels-imports-and-dataclasses/34173

Linked PRs

• gh-109653: typing.py: improve import time by creating soft-deprecated members on demand #109651
• gh-109653: Improve enum import time by avoiding import of functools #109789
• gh-109653: Remove unused imports in the Lib/ directory #109803
• gh-109653: Avoid a top-level import of types in functools #109804
• gh-109653: Just import recursive_repr in dataclasses #109822
• gh-109653: Improve the import time of email.utils #109824
• GH-109653: Defer import of importlib.metadata._adapters #109829
• gh-109653: Fix py312 regression in the import time of random #110221
• [3.12] gh-109653: Fix py312 regression in the import time of random (GH-110221) #110247
• gh-109653: Defer importing warnings in several modules #110286
• gh-109653: Improve import time of logging by lazy loading traceback #112995
• gh-109653: Speedup import of threading module #114509
• gh-109653: Improve import time of importlib.metadata / email.utils #114664
• gh-109653: Reduce import overhead of uuid module on Linux #115160
• gh-109653: What's new: Note improved import times for several stdlib modules in Python 3.13 #118697
• gh-154675: Improve import performance of tkinter library with lazy imports #148409