“d85a7733c4dcb45762d966d1d7db4c2edbe0de4b”上不存在“core/git@gitcode.net:paddlepaddle/Serving.git”
* use yapf to format all python file * yapf exclude two unittests file for they rely on writing and reading file, and format will break them * disable diff_py_file because too many diff files cause command following failed