1）download zip file： https://github.com/dlitz/pycrypto
2）extract file and install：
py -3 -m setup.py install
PS:some error occurs,go to https://docs.python.org/3.4/using/windows.html#compiling-python-on-windows ,and download VS, install it
原文：https://www.cnblogs.com/luckyflower/p/9146172.html