unsubscriptable-object / E1136

Message emitted:

Value '%s' is unsubscriptable

Description:

Emitted when a subscripted value doesn't support subscription (i.e. doesn't define __getitem__ method or __class_getitem__ for a class).

Problematic code:

class Fruit:
    pass


Fruit()[1]  # [unsubscriptable-object]

Correct code:

class Fruit:
    def __init__(self):
        self.colors = ["red", "orange", "yellow"]

    def __getitem__(self, idx):
        return self.colors[idx]


Fruit()[1]

Created by the typecheck checker.