blame_incremental raises RuntimeError with Python 3.7

[dschopf]

After upgrading to Python 3.7 the Repo.Base.blame_incremental iterator raises a RuntimeError.

This is probably due to https://www.python.org/dev/peps/pep-0479/.

This is running on latest Arch Linux x86_64 testing, using the following package versions:
python: 3.7.0-3, git: 2.19.0-1, python-git: python-gitpython 2.1.11-2

It can be reproduced with the following code:

#!/usr/bin/env python3
# coding: utf-8

import git

git_repo = git.Repo('.')
blame_list = list(git_repo.blame_incremental('@', 'package.sh', w=True))

Result:

$ ./test.py
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/git/repo/base.py", line 717, in blame_incremental
    line = next(stream)  # when exhausted, causes a StopIteration, terminating this function
StopIteration

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "./test.py", line 7, in <module>
    blame_list = list(git_repo.blame_incremental('@', 'package.sh', w=True))
RuntimeError: generator raised StopIteration

Running this script in Python < 3.7 works as expected and does not raise the exception.

[Byron]

I think this could be fixed with the landing of #793 .

[cclauss]

@dschopf Has this been fixed?

[dschopf]

Yes, I can no longer reproduce the issue using the latest master.