‘pip‘ is not recognized as an internal or external command

安装python后python命令可用，但是pip或pip3不能用，错误提示：

'pip' is not recognized as an internal or external command

将pip目录(Scripts)放到系统环境变量Path中就可以，例如：.../Python36/Scripts

参考：https://blog.csdn.net/qq_40244755/article/details/102503318