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
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
PyDefaultArgument- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Python Community Edition, 242.22900 |
Last modified: 11 September 2024