#window下载 https://www.python.org/downloads/windows/
3.8.12/ https://www.python.org/ftp/python/3.8.10/python-3.8.10-amd64.exe
3.7.12/https://www.python.org/ftp/python/3.7.9/python-3.7.9-amd64.exe
3.6.15/https://www.python.org/ftp/python/3.6.8/python-3.6.8-amd64.exe
2.7.18https://www.python.org/ftp/python/2.7.18/https://www.python.org/ftp/python/2.7.18/python-2.7.18.amd64.msihttps://www.python.org/ftp/python/2.7.18/python-2.7.18.msi
各版本下载https://www.python.org/ftp/python/
