.
├── command.py
├── git_command.py
├── error.py
├── manifest_xml.py
├── project.py
└── subcmds
    ├── __init__.py
    ├── config.py
    ├── gitee_pr.py
    ├── push.py
    ├── start.py
    ├── upload.py
    └── version.py

def Execute(self, opt, args):
    project_list = self.GetProjects(args)  #获取repo push仓库列表

    if opt.branch:  # 判断是否传入了branch参数
        branch = opt.branch

    if opt.force:   # 判断是否传入force参数
      if len(project_list) != 1:
        print('error: --force requires exactly one project', file=sys.stderr)
        sys.exit(1)

    if branch:
        for project in project_list:  
          branch_tmp = branch
          if (not opt.new_branch and
                  project.GetUploadableBranch(branch) is None):  # 判断仓库是否有可推送的分支，当有new_branch参数时另外处理
            continue
          branch_tmp = project.GetBranch(branch_tmp)
          if branch_tmp.LocalMerge:
            rb = ReviewableBranch(project, branch_tmp, branch_tmp.LocalMerge)  # 推送分支实例
            pending.append((project, [rb]))  # 加入待推送队列
    if not pending:
      print("no branches ready for upload", file=sys.stderr)
    elif len(pending) == 1 and len(pending[0][1]) == 1:  #进行单个推送或是批量推送
      self._SingleBranch(opt, pending[0][1][0], reviewers)
    else:
      self._MultipleBranches(opt, pending, reviewers)
......