* input.py

* Update python/paddle/nn/functional/input.py

* Update input.py

* Update all_gather.py

* Update all_gather.py

* xdoc

* Apply suggestions from code review

* Update python/paddle/distributed/models/moe/utils.py

* Apply suggestions from code review
Co-authored-by: NNyakku Shigure <sigure.qaq@gmail.com>

* Apply suggestions from code review

* Apply suggestions from code review

* Apply suggestions from code review

---------
Co-authored-by: NNyakku Shigure <sigure.qaq@gmail.com>