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python git 库类
pygit2:www.pygit2.org
gitpyhon:http://gitpython.readthedocs.io/en/stable/
window python3.5 安装库类时碰到unable to find vcvarsall.bat，可以采用下载whl安装文件进行安装。

stackoverflow上关于python git 相关讨论参考：
https://stackoverflow.com/questions/1456269/python-git-module-experiences

https://stackoverflow.com/questions/7119452/git-commit-from-python

gitpython 相关代码：

# git 提交
    from git import Repo, Remote
    try:
        try:
            repo = Repo.init(config_base_path)
            origin = repo.create_remote("origin", git_remote_url)
            isFirst = True
        except Exception as ex:
            print(ex)
            isFirst = False
            repo = Repo.init(config_base_path)
            origin = repo.remote()
        exists = origin.exists()
        assert exists
        assert origin == repo.remotes.origin == repo.remotes['origin']
        origin.fetch()
        if not isFirst:
            repo.index.remove(["*"])
        repo.index.add(["*"])
        repo.index.commit("commit info %s" % commit_info)
        info = origin.push(refspec="refs/heads/master:refs/heads/master")[0]
        print(info.flags, info.local_ref, info.remote_ref_string, info.remote_ref, info.old_commit, info.summary)


    except Exception as ex:
        print("ex", ex)
        # 回滚
        repo.head.reset('HEAD~1', index=True, working_tree=True)
        raise ex

在linux搭建git服务：http://www.cnblogs.com/dee0912/p/5815267.html

在自己搭建的git服务push时需指定refspec,
refspec参数解释具体可以参考gitpython->remote.fetch,否则将出现push异常的情况：

fatal: The current branch master has no upstream branch.
To push the current branch and set the remote as upstream, use

注意修改仓库目录的权限：

Error lines received while fetching: error: insufficient permission for adding an object to repository database ./objects