D7384: commands: necessary annotations and suppresssions to pass pytype

[durin42 (Augie Fackler)]

durin42 added inline comments.

INLINE COMMENTS

> dlax wrote in commands.py:1127
> This one is sad. I think this can be sorted out by replacing the `try:/finally:` with a context manager. (Can send a patch, if it sounds good to you.)

By all means!

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7384/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7384

To: durin42, #hg-reviewers
Cc: dlax, mercurial-devel