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Issue 8814: functools.wraps() did not copy __annotations__.

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This commit is contained in:
Raymond Hettinger 2010-08-08 00:56:52 +00:00
parent f56c9cd30d
commit c6d80c1bef
5 changed files with 17 additions and 7 deletions
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5
Lib/functools.py
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@ -12,7 +12,7 @@ from _functools import partial, reduce
# update_wrapper() and wraps() are tools to help write
# wrapper functions that can handle naive introspection
WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__')
WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__', '__annotations__')
WRAPPER_UPDATES = ('__dict__',)
def update_wrapper(wrapper,
wrapped,
@ -30,7 +30,8 @@ def update_wrapper(wrapper,
function (defaults to functools.WRAPPER_UPDATES)
"""
for attr in assigned:
setattr(wrapper, attr, getattr(wrapped, attr))
if hasattr(wrapped, attr):
setattr(wrapper, attr, getattr(wrapped, attr))
for attr in updated:
getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
# Return the wrapper so this can be used as a decorator via partial()