Inada Naoki <[email protected]> added the comment:
I don't like co_annotations.
* It changes PyCode_NewXXX() API.
* Many functions don't have annotations. Adding annotation to code object makes
code object fatter even if the function doesn't have annotation.
* Code object is immutable & hashable. Adding annotation to code object makes
== and hash() complex.
* We may introduce lazy loading for docstring and annotation in the future.
func.__annotations__ = ('x', 'int', 'z', 'float', 'return', 'Hoge') is much
better because:
* Zero overhead for functions without any annotations.
* After annotation dict is created, the tuple can be released.
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<https://bugs.python.org/issue42202>
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