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Invalid usage of ClassVar variables

Reports invalid usages of ClassVar annotations.

Example:

from typing import ClassVar class Cat: color: ClassVar[str] = "white" weight: int def __init__(self, weight: int): self.weight = weight Cat.color = "black" # OK my_cat = Cat(5) my_cat.color = "gray" # Error, setting class variable on instance

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.

PyClassVar
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