is_false

privex.helpers.common.is_false(v, chk_none: bool = True) → bool[source]

Warning: Unless you specifically need to verify a value is Falsey, it’s usually safer to check for truth is_true() and invert the result, i.e. if not is_true(v)

Check if a given bool/str/int value is some form of False:

  • bool: False

  • str: 'false', 'no', 'n', '0'

  • int: 0

If chk_none is True (default), will also consider the below values to be Falsey:

boolean: None // string: 'null', 'none', ''

(note: strings are automatically .lower()’d)

Usage:

>>> is_false(0)
True
>>> is_false('yes')
False
Parameters

  • v (Any) – The value to check for falseyness

  • chk_none (bool) – If True, treat None/'none'/'null' as Falsey (default True)

Return bool is_False

True if the value appears to be falsey, otherwise False.