def _ensure_one_data_source(self, *other_sources):
        """There can only be one source of input request data.

        """
        if any(other_sources):
            self.error('Request body (from stdin, --raw or a file) and request '
                       'data (key=value) cannot be mixed. Pass '
                       '--ignore-stdin to let key/value take priority. '
                       'See https://httpie.io/docs#scripting for details.')
There can only be one source of input request data.

        
httpie/cli/argparser.py