Close issue 17482: don't overwrite __wrapped__
diff --git a/Lib/functools.py b/Lib/functools.py
index 6aa13a2..19f88c7 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -55,7 +55,6 @@
are updated with the corresponding attribute from the wrapped
function (defaults to functools.WRAPPER_UPDATES)
"""
- wrapper.__wrapped__ = wrapped
for attr in assigned:
try:
value = getattr(wrapped, attr)
@@ -65,6 +64,9 @@
setattr(wrapper, attr, value)
for attr in updated:
getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
+ # Issue #17482: set __wrapped__ last so we don't inadvertently copy it
+ # from the wrapped function when updating __dict__
+ wrapper.__wrapped__ = wrapped
# Return the wrapper so this can be used as a decorator via partial()
return wrapper