pip3 install --upgrade pip

当您执行"pip3 install --upgrade pip"命令时，它的作用是使用pip3来升级pip工具本身。这个命令会检查当前安装的pip版本，并与最新版本进行比较。如果最新版本的pip可用，它将被下载并安装在您的系统中，以确保您具有最新版本的pip工具。这个命令是用来更新pip工具，以便您能够更好地管理和安装Python包。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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