assign 应该翻译成 赋值 ，而非 分配
it should be `some_set`
correct typo
typo
fix typo

or that is not a typo?
I'm not sure, so I request a pull, you make the choice.
Merge remote-tracking branch 'remotes/origin/patch-2'
Merge remote-tracking branch 'remotes/origin/patch-3'
Merge remote-tracking branch 'remotes/origin/patch-4'
Merge remote-tracking branch 'remotes/origin/patch-5'
Merge pull request #444 from picasso250/master

[bash/zh-cn][git/zh-cn][java/zh-cn][python/zh-cn] typo