New submission from Raymond Hettinger <raymond.hettin...@gmail.com>:
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'
----------
components: Interpreter Core
messages: 350490
nosy: rhettinger
priority: low
severity: normal
status: open
title: Create empty __annotations__ dictionaries lazily
type: performance
versions: Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37949>
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