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Fixed logic error in "Beware of default mutable arguments!"

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The example showing how using None as a default argument is used
instead of a mutable default argument had reversed logic.  It would
set default_arg to [] whenever the caller passed a non-None argument.
This commit is contained in:
Lars Kellogg-Stedman 2020-01-19 12:03:30 -05:00
parent de113d2491
commit 16c90f9b24
1 changed files with 1 additions and 1 deletions
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2
README.md vendored
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@ -2241,7 +2241,7 @@ def some_func(default_arg=[]):
```py
def some_func(default_arg=None):
if default_arg is not None:
if default_arg is None:
default_arg = []
default_arg.append("some_string")
return default_arg