argclz.validator.LambdaValidator

class argclz.validator.LambdaValidator

Bases: Validator, Generic[T]

A simple validator that carries a failure message.

__init__(validator, message=None)

Parameters:

• validator (Callable[[T], bool]) – callable

• message (str | Callable[[T], str] | None) – failure message. It could be a str message that contains one %-formating expression (for example: ‘%s’), or a callable (T)->str.

Methods Summary

__init__(validator[, message])
freeze()	(internal use) return a copy of itself.
__call__(value)

Details

__call__(value)

Parameters:

value (T) – type-casted value.

Returns:

True if value pass the validation.

Raises:

ValueError – when value does not pass the validation.

Return type:

bool

freeze()

(internal use) return a copy of itself.

Return type:

Self