add one book about python

free-programming-books-zh.md

@@ -176,6 +176,7 @@
 
 ### Python
 * [Django book 2.0](http://djangobook.py3k.cn/2.0/)
+* [Python 3 文档(简体中文) 3.2.2 documentation](http://docspy3zh.readthedocs.org/en/latest/)
 * [深入 Python](http://woodpecker.org.cn/diveintopython/)
 * [深入 Python 3](http://woodpecker.org.cn/diveintopython3/)
 * [笨办法学 Python](http://sebug.net/paper/books/LearnPythonTheHardWay/)