Combining GitPython with multiprocessing seems to have some issues:

Traceback (most recent call last):
File "/home//pycharm-2017.1.4/helpers/pydev/pydevd.py", line 1596, in
globals = debugger.run(setup['file'], None, None, is_module)
File "/home//pycharm-2017.1.4/helpers/pydev/pydevd.py", line 1023, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "/home//pycharm-2017.1.4/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "/home//git/git_repo_analysis/stash/get_repos.py", line 45, in
commits += q.get()
File "/usr/lib/python3.5/multiprocessing/queues.py", line 113, in get
return ForkingPickler.loads(res)
TypeError:init() missing 1 required positional argument: 'secs_west_of_utc'

In order to reproduce you need some git repositories and this code snippet:

importsubprocessfrommultiprocessingimportPool,QueuefromgitimportRepodeff_init(q):parse_repo.q=qdefparse_repo(repository_directory):commits= []repo=Repo(repository_directory)ifnotrepo.branches:returnforcommitinrepo.iter_commits():commits.append({"Timestamp":commit.authored_datetime,"CommitHash":commit.hexsha})returnparse_repo.q.put(commits)process=subprocess.run("find repos -name .git -type d -exec dirname {} \;",shell=True,stdout=subprocess.PIPE)repository_directories=list(filter(None,str(process.stdout,"utf-8").split("\n")))q=Queue()p=Pool(None,f_init, [q])results=p.map(parse_repo,repository_directories[:5])p.close()commits= []foriinrange(len(repository_directories)):commits+=q.get()

Running the same without multiprocessing in a simple for-loop works fine.
I am using GitPython via debian package (python3-git 2.1.5-1) on Linux 4.9.0-1-amd64 SMP Debian 4.9.6-3 (2017-01-28) x86_64 GNU/Linux