Invalid type hints definitions and usages

Reports invalid usages of type hints.

Example:

from typing import TypeVar

T0 = TypeVar('T1') # Argument of 'TypeVar' must be 'T0'


def b(p: int) -> int:  # Type specified both in a comment and annotation
    # type: (int) -> int
    pass


def c(p1, p2): # Type signature has too many arguments
    # type: (int) -> int
    pass

Available quick-fixes offer various actions. You can rename, remove, or move problematic elements. You can also manually modify type declarations to ensure no warning is shown.

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.

PyTypeHints

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 ID: PyTypeHintsInspection

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection PyTypeHints

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details
By default bundled with:	CLion 2025.2, DataSpell 2025.2, IntelliJ IDEA 2025.2, PyCharm 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025