def file_info(self, file_id):
return self._get('<STR_LIT>', params={'<STR_LIT:file>': file_id})<EOL>
Used to request info for a specific file, info like size, name, .....

        Args:
            file_id (str): File-ID(s), single file or comma-separated (max. 50)

        Returns:
            dict: dictionary containing file(s) info, each key represents a file_id. ::

                  {
                     "72fA-_Lq8Ak3": {
                        "id": "72fA-_Lq8Ak3",
                        "status": 200,
                        "name": "The quick brown fox.txt",
                        "size": 123456789012,
                        "sha1": "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12",
                        "content_type": "plain/text",
                     },
                     "72fA-_Lq8Ak4": {
                        "id": "72fA-_Lq8Ak4",
                        "status": 500,
                        "name": "The quick brown fox.txt",
                        "size": false,
                        "sha1": "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12",
                        "content_type": "plain/text",
                     },
                     ...
                   }