code: def _is_python(self, constraint_list):
          
          if len(constraint_list) == 1 and \
                  PythonMethod.constraint_is_method(constraint_list[0]):
              return True
          if len(constraint_list) > 1 and \
                  any(filter(PythonMethod.constraint_is_method, constraint_list)):
              condensed_list = '/'.join(constraint_list)
              err = PythonMethod.CANNOT_COMBINE_ERR
              raise ValidatorSyntaxError(condensed_list, err)
          return False
docs: Check whether constraint is an import of Python code.
  
          :param constraint_list: List of raw constraints from YAML file
          :type constraint_list: list(str)
          :return: True if this refers to an import of code, False otherwise
          :raises: ValidatorSyntaxError