C:\Python27\Scripts 路径下：
easy_install.exe:
C:\Python27\Scripts>easy_install.exe pycrypto
pip.exe:
C:\Python27\Scripts>pip install pycrypto
第三方库存放目录：
c:\python27\lib\site-packages\pycrypto-2.6.1-py2.7-win32.egg
原文：http://www.cnblogs.com/xunbu7/p/5557524.html