Invalid protocol definitions and usages

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

Example:

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

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.

PyProtocol

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

Inspection Details
By default bundled with:	CLion 2024.2, PyCharm 2024.2,
Can be installed with plugin:	Python Community Edition, 242.22900

Last modified: 11 September 2024