.py Python Script
.pym Python Macro File
.pyc Python Bytecode
.pyd Python Dynamic Module
.pyo Python Optimized Code
.tcl TCL Script
.pxd Pyrex Definition File
.pyr Python Repository
.pth Python Path Configuration
.pxi Pyrex Include File
原文：http://www.cnblogs.com/zhuangliu/p/6321837.html