singleton-comparison / C0121

Message emitted:

Comparison %s should be %s

Description:

Used when an expression is compared to singleton values like True, False or None.

Problematic code:

game_won = True
if game_won == True:  # [singleton-comparison]
    print("Game won !")

Correct code:

game_won = True
if game_won:
    print("Game won !")

Related links:

• PEP 285 – Adding a bool type

Created by the basic checker.