Do not assign to function arguments
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ID: python-best-practices/function-variable-argument-name
Language: Python
Severity: Warning
Category: Best Practices
Description
A function parameter should only be read and not be modified. If your intent is to modify the value of the parameter, return the value in the function and handle the new value in the caller of the function.
Non-Compliant Code Examples
def func(arg1, arg2):
arg1 = foo # assign to a variable that is an argument
def func(arg1, arg2):
(arg1, arg3, arg2) = foo # assign to a variable that is an argument
Compliant Code Examples
def func(arg1, arg2):
arg3 = foo
