code: def str2bool(string_, default='raise'):
      
      true = ['true', 't', '1', 'y', 'yes', 'enabled', 'enable', 'on']
      false = ['false', 'f', '0', 'n', 'no', 'disabled', 'disable', 'off']
      if string_.lower() in true:
          return True
      elif string_.lower() in false or (not default):
          return False
      else:
          raise ValueError('The value \'{}\' cannot be mapped to boolean.'
                           .format(string_))
docs: Convert a string to a bool.
  
      Parameters
      ----------
      string_ : str
      default : {'raise', False}
          Default behaviour if none of the "true" strings is detected.
  
      Returns
      -------
      boolean : bool
  
      Examples
      --------
      >>> str2bool('True')
      True
      >>> str2bool('1')
      True
      >>> str2bool('0')
      False