The default argument is mutable
Reports a problem when a mutable value as a list or dictionary is detected in a default value for an argument.
Default argument values are evaluated only once at function definition time, which means that modifying the default value of the argument will affect all subsequent calls of that function.
Example:
def func(s, cache={}):
cache[s] = None
When the quick-fix is applied, the code changes to:
def func(s, cache=None):
if cache is None:
cache = {}
cache[s] = None
Inspection Details | |
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Available in: | DataSpell 2023.3, PyCharm 2023.3 |
Plugin: | Python Community Edition, 233.SNAPSHOT |
Last modified: 13 July 2023