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First argument of the method is reassigned

Reports cases when the first parameter, such as self or cls, is reassigned in a method. Because in most cases, there are no objectives in such reassignment, the IDE indicates an error.


class Account: def calc(self, balance): if balance == 0: self = balance return self

As a fix, you might want to check and modify the algorithm to ensure that reassignment is needed. If everything is correct, you can invoke intention actions for this code and opt to ignore the warning.

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

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.

Settings or Preferences | Editor | Inspections | Python


By default bundled with

DataSpell 2024.1, IntelliJ IDEA 2024.1, PyCharm 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Python Community Edition, 241.SNAPSHOT

Last modified: 18 June 2024