$ git push -u origin master

To https://github.com/szySunzhouyu/python.git

 ! [rejected]        master -> master (non-fast-forward)

error: failed to push some refs to 'https://github.com/szySunzhouyu/python.git'

hint: Updates were rejected because the tip of your current branch is behind

hint: its remote counterpart. Integrate the remote changes (e.g.

hint: 'git pull ...') before pushing again.

hint: See the 'Note about fast-forwards' in 'git push --help' for details.

出现问题的原因：

github中的有些文件不在本地代码目录中

解决办法：

$ git pull --rebase origin master  #执行这一步。

结果：

本地代码目录下出现gitHub中文件

此时 再执行以下操作 代码成功上传至github

 git push -u origin master