Function validate_bool

lib/matplotlib/rcsetup.py:179–188

Convert b to ``bool`` or raise.

(b)

def validate_bool(b):
    """Convert b to ``bool`` or raise."""
    if isinstance(b, str):
        b = b.lower()
    if b in ('t', 'y', 'yes', 'on', 'true', '1', 1, True):
        return True
    elif b in ('f', 'n', 'no', 'off', 'false', '0', 0, False):
        return False
    else:
        raise ValueError(f'Cannot convert {b!r} to bool')


def validate_axisbelow(s):