1、X86：对应系統是32位。X86-64对64位系统。
2、web-based、executable 、 embeddable zipfile是什么意思？
web-based: 透过网络安装的，就是执行安装后才透过网络下载python
executable: 可执行文件安装，既把要安装的python全部下载好在本机安装
embeddable zipfile: zip 压缩档，就是python打包成zip压缩包
Latest Python 3 Release - Python 3.7.1 Latest Python 2 Release - Python 2.7.15 Python 3.7.2rc1 - 2018-12-11 Download Windows x86 web-based installer Download Windows x86 executable installer Download Windows x86 embeddable zip file Download Windows x86-64 web-based installer Download Windows x86-64 executable installer Download Windows x86-64 embeddable zip file Download Windows help file