code: def is_blankspace(self, char):
          
          if len(char) > 1:
              raise TypeError("Expected a char.")
          if char in self.blankspaces:
              return True
          return False
docs: Test if a character is a blankspace.
  
          Parameters
          ----------
          char : str
              The character to test.
  
          Returns
          -------
          ret : bool
              True if character is a blankspace, False otherwise.