pip install --index-url https://mirrors.aliyun.com/ERROR: You must give at least one requirement to在用阿里云镜像安装pip安装第三方包时报错：ERROR: You must give at least one requirement to install (see “pip help install”)
在用阿里云镜像安装pip安装第三方包时报错：ERROR: You must give at least one requirement to install (see “pip help install”)我用了如下命令pip install --index-url https://mirrors.aliyun.com/pypi/simple/pyecharts但是报错：ERROR: You must give at least one requirement to install (see “
