* mv all unittests test

* fix error

* fix error

* fix

* fix

* del unittests

* fix paddle_build.sh

* fix

* fix test

* fix add test

* fix

* fix

* fix

* merge develop

* fix

* fix

* fix

* fix

* fix

* merge develop

* fix test_async_read_write

* fix test_async_read_write

* merge develop

* fix

* fix import legacy_test

* fix

* fix

* fix

* fix

* fix

* fix

* fix

* fix

* fix bug

* fix

* fix coverage test bug

* fix

* fix

* fix

* fix

* fix

* fix code sstyle

* fix code

* fix code

* fix

* fix

* fix

* del test_sequence_enumerate_op.py

* fix

* add logspace yaml

* update by comments

* resolve test framework conflicct

* check dygraph on for op tests

* reset eigh and modify prelu&sign

* update eager_op_test

* lint

* add more ops

* fix reduce

* modify reduce test

* reset reduce_op

* modify matmul test

* revert prelu

* isort all files

* revert conflicting files

* revert conflicting files

* revert conflicting files

* revert conflicting files

* revert conflicting files

* 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

* 增加logspace的算子描述

* 增加logspace的形状推断

* 增加logspace核函数实现

* 在python中增加logspace接口

* 增加logspace单测

* 增加logspace

* Update logspace_kernel.cu

* Update logspace_op.cc

* 调整代码格式

* Update doc of logspace

* Update tensor.py

* Update logspace_op.cc

* Update logspace_kernel.cc

* Update logspace_kernel.cu

* Update test_logspace.py

* 调整 logspace 的位置

* 调整代码格式