mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-40897:Give priority to using the current class constructor in inspect.signature (#27177)

Browse source 
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
This commit is contained in:
Weipeng Hong 2021-07-16 21:04:27 +08:00 • committed by GitHub
parent 8ce3008585
commit 6aab5f9bf3
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 59 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

24
Lib/inspect.py
View file

@ -2444,15 +2444,23 @@ def _signature_from_callable(obj, *,
if call is not None:
sig = _get_signature_of(call)
else:
# Now we check if the 'obj' class has a '__new__' method
factory_method = None
new = _signature_get_user_defined_method(obj, '__new__')
if new is not None:
sig = _get_signature_of(new)
else:
# Finally, we should have at least __init__ implemented
init = _signature_get_user_defined_method(obj, '__init__')
if init is not None:
sig = _get_signature_of(init)
init = _signature_get_user_defined_method(obj, '__init__')
# Now we check if the 'obj' class has an own '__new__' method
if '__new__' in obj.__dict__:
factory_method = new
# or an own '__init__' method
elif '__init__' in obj.__dict__:
factory_method = init
# If not, we take inherited '__new__' or '__init__', if present
elif new is not None:
factory_method = new
elif init is not None:
factory_method = init
if factory_method is not None:
sig = _get_signature_of(factory_method)
if sig is None:
# At this point we know, that `obj` is a class, with no user-