* 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

* fix c_split bug

* fix utest

* add c_embedding for tensorparallel

* fix pipeline

* fix mp pp dp

* fix utest of hybrid parallel

* add utest for tuple

* add clip/check

* add amp & clip grad in dygraph

* add logging

* support dp & mp