一、下载Python安装包
python-3.6.3
https://www.python.org/ftp/python/3.6.3/python-3.6.3.exe
python-2.7.14
https://www.python.org/ftp/python/2.7.14/python-2.7.14.msi
python-3.6.3
https://www.python.org/ftp/python/3.6.3/python-3.6.3.exe
python-2.7.14
https://www.python.org/ftp/python/2.7.14/python-2.7.14.msi