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install PyCrypto on Windows

Environment: Python 2.7 My default python environment is python 3.4, and I create a Virtualenv of python 2.7, when I try to install PyCrypto, it return some error. warning: GMP or MPIR library not found; Not building Crypto.PublicKey._fastmath. building 'Crypto.Random.OSRNG.winrandom' extension error: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279 I google and get a answer, I need to install prebuild binaries of PyCrypto, below is the page with those binaries for windows Read more →