如何将本地项目上传到github上

 By default and convention, the way we do this using git push is pretty simple:
    git push origin main for instance.
    The git push part is the command
    that means send commits and ask them to set a name. The origin part is
    what Git calls a remote: a short name that, mostly, holds a URL. The
    main part at the end, here, is our branch name. That’s the one our Git
    is using to find our commits. We’ll have our Git send our commits,
    then ask their Git to set their main too.
 
    This last part—where we’ve put in main here—is what Git calls a
    refspec. Refspecs actually let us put in two names, separated by a
    colon, or a couple of other forms. We can, for instance, use HEAD:main
    as in Arka’s answer (although for technical reasons we might want to
    use HEAD:refs/heads/main in many cases). But in simple cases, we can
    just use one branch name: git push origin main. The simple branch name is a simple form of refspec.
 
 
默认情况下，我们使用git push的方式非常简单:
例如Git push origin main。
git push部分是命令
这意味着发送提交并要求它们设置一个名称。原点部分是
Git称之为远程:一个简短的名称，通常包含一个URL。的
最后的主要部分是我们的分支机构名称。这是我们的Git
是用来查找提交的。我们会让Git发送提交，
然后让Git也设置main函数。
 
最后一部分——我们在这里把main放在这里——是Git调用的a
refspec。Refspecs实际上让我们输入两个名称，用a分隔
冒号，或者其他形式。例如，我们可以使用HEAD:main
就像Arka的回答一样(尽管出于技术原因，我们可能想要这样做)
在很多情况下使用HEAD:refs/heads/main)。但在简单的情况下，我们可以
只需使用一个分支名称:git push origin main。简单分支名称是refspec的一种简单形式。

error: failed to push some refs to 'https://github.com/！！！！！/DemoP.git'
hint: Updates were rejected because the remote contains work that you do not
hint: have locally.  This is usually caused by another repository pushing to
hint: the same ref. If you want to integrate the remote changes, use
hint: 'git pull' before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
 
错误:未能将一些refs推到'https://github.com/！！！/DemoP.git'
 
提示:更新被拒绝，因为远程包含您不需要的工作
 
提示:有本地。这通常是由于另一个存储库推送到
 
提示:相同的引用。如果要集成远程更改，请使用
 
提示:再推之前先拉一下。
 
提示:详见“git push—help”中的“关于快进的说明”。