* update config

* re-blacken python code

* temporarily disable date and diff_py_file

* skip a format

* [CodeStyle] remove all future import

* revert test_error.py

* restore future import in example code

* 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

* Delete fast_check_nan_inf

* Delete run_fast_nan_inf_debug

test=develop

Fix pb_protobuf2 FromString problem

Fix debuger bugs

init debuger.