关于pip升级问题You are using pip version 10.0.1, however version 21.0.1 is available

使用pip安装py4j的方式：进入到安装Anaconda的Script目录下：cmd，然后输入 pip install py4j 进行安装

安装时出现问题：You are using pip version 10.0.1, however version 21.0.1 is available

 完美解决方法：

python -m pip install --upgrade pip -i https://pypi.douban.com/simple

 已成功解决，可以成功安装py4j：

验证是否安装成功：

 

 如图，导入py4j不报错，说明安装成功。