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Invalid protocol definitions and usages

Reports invalid definitions and usages of protocols introduced in PEP-544.


from typing import Protocol class MyProtocol(Protocol): def method(self, p: int) -> str: pass class MyClass(MyProtocol): def method(self, p: str) -> int: # Type of 'method' is not compatible with 'MyProtocol' pass class MyAnotherProtocol(MyClass, Protocol): # All bases of a protocol must be protocols pass

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