docs: def asbool(value, true=(b'true', u'true'), false=(b'false', u'false')):
      """Return string as bool if possible, else raise TypeError.
  
      >>> asbool(b' False ')
      False
  
      """
      value = value.strip().lower()
      if value in true:  # might raise UnicodeWarning/BytesWarning
          return True
      if value in false:
          return False
      raise TypeError()