“1ee9037fce5651b0fdea60f30f733c3bb9962c06”上不存在“release_doc/0.9.0/doc/source/math/matrix/matrix.html”
* 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