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Created on 2019-08-26 06:39 by rhettinger, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (2) | |||
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| msg350490 - (view) | Author: Raymond Hettinger (rhettinger) *  |
Date: 2019-08-26 06:39 | |
Right now, every heap function is given a new annotations dictionary even if annotations aren't used. How about we create these lazily in order to speed-up function creation time, improve start-up time, and save space.
>>> def f(): pass
>>> def g(): return 1
>>> f.__annotations__
{}
>>> g.__annotations__
{}
>>> hex(id(f.__annotations__))
'0x109207e40'
>>> hex(id(g.__annotations__))
'0x1092296c0'
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| msg350509 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2019-08-26 08:05 | |
Guido's Time Machine strikes back.
>>> import gc
>>> def f(): pass
...
>>> gc.get_referents(f)
[<code object f at 0x7f45f5d366c0, file "<stdin>", line 1>, {'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, 'gc': <module 'gc' (built-in)>, 'f': <function f at 0x7f45f5dd3b90>}, '__main__', None, 'f', 'f']
>>> f.__annotations__
{}
>>> gc.get_referents(f)
[<code object f at 0x7f45f5d366c0, file "<stdin>", line 1>, {'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, 'gc': <module 'gc' (built-in)>, 'f': <function f at 0x7f45f5dd3b90>}, '__main__', None, 'f', {}, 'f']
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:19 | admin | set | github: 82130 |
| 2019-08-27 05:12:13 | rhettinger | set | status: open -> closed resolution: out of date stage: resolved |
| 2019-08-26 08:05:15 | serhiy.storchaka | set | nosy:
+ serhiy.storchaka messages: + msg350509 |
| 2019-08-26 06:39:48 | rhettinger | create | |