pip Download: https://pypi.python.org/pypi/pip#downloads
After the download is complete, locate the file and unzip, locate the following path.
Opened cmd, cd to the current directory, and then execute the following command:
python setup.py install
pip添加环境变量，找到python下的scrip，添加至path下，记得后面加上分号
检查是否安装成功，在cmd下输入pip
查看pip安装的包：pip list
pip安装方式是pip install 包名