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boolean-positional-value-in-call (FBT003)#

Derived from the flake8-boolean-trap linter.

What it does#

Checks for boolean positional arguments in function calls.

Some functions are whitelisted by default. To extend the list of allowed calls configure the lint.flake8-boolean-trap.extend-allowed-calls option.

Why is this bad?#

Calling a function with boolean positional arguments is confusing as the meaning of the boolean value is not clear to the caller, and to future readers of the code.

Example#

def func(flag: bool) -> None: ...


func(True)

Use instead:

def func(flag: bool) -> None: ...


func(flag=True)

Options#

References#