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gh-108901: Add inspect.Signature.from_frame #116537

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gh-108901: Add inspect.Signature.from_frame #116537

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e0df986
gh-108901: Add `inspect.Signature.from_frame`
sobolevn Mar 9, 2024
b434fbc
Improve docs
sobolevn Mar 9, 2024
bbe3229
Improve docs
sobolevn Mar 9, 2024
7290561
Address review
sobolevn Mar 10, 2024
76ae2ef
Typos!
sobolevn Mar 10, 2024
bfe30fe
Add tests for cleared frame
sobolevn Mar 10, 2024
26b5291
Do not show defaults for parameters
sobolevn Mar 11, 2024
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sobolevn committed Mar 9, 2024
commit bbe3229db2176077f8ac964249e78edd93ff48b9
10 changes: 9 additions & 1 deletion Lib/inspect.py
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Expand Up @@ -3108,7 +3108,15 @@ def from_callable(cls, obj, *,

@classmethod
def from_frame(cls, frame):
"""Constructs Signature from a given frame object."""
"""
Constructs Signature from a given frame object.

Notice that it is impossible to get signatures
with annotations from frames.
Because annotations are stored in functions.
Also note that default parameter values might
be modified inside the frame.
"""
if not isframe(frame):
raise TypeError(f'Frame object expected, got: {type(frame)}')

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