PyCrypto install error on Windows

Question

I am trying to install PyCrypto 2.6 Library on my computer. But I keep getting the following error

D:\Software\Python\package\pycrypto-2.6>python setup.py build
running build
running build_py
running build_ext
warning: GMP or MPIR library not found; Not building Crypto.PublicKey._fastmath.

building 'Crypto.Random.OSRNG.winrandom' extension
error: Unable to find vcvarsall.bat

My System has Windows 8 Pro 64-bit, Visual Studio Enterprise 2012 and Python 3.3

To fix the error I tried to set the Environment Variable VS90COMNTOOLS=%VS110COMNTOOLS% as advised by fmuecke in the post error: Unable to find vcvarsall.bat but it didn't work for me.

Can any one please advise me how to fix this error.

FYI, I don't to install VC2008 etc..

Answer 1

I managed to install PyCrypto 2.6 by using the prebuilt binary for Python3.3 from The Voidspace Python Modules.

It doesn't actually fix the error: Unable to find vcvarsall.bat for other package which don't have a prebuilt binaries available.

However it eliminates the need to build PyCrypto package, allowing me to install PyCrypto on my system without getting the error.

Answer 2

I've just used

https://www.microsoft.com/en-gb/download/details.aspx?id=44266

with setuptools > 6.0 and run

'pip install pycrypto'

and it worked

Answer 3

I know this is an old question, but I also need today much time to get paramiko wokring. I want to use Python 3.4 and on voidspace, there are no prebuild binaries for 3.4.

Finally, I got a wokring pycrypto by installing "Microsoft Studio Express 2010 C++" and run from the pycrypto 2.7 folder:

python setup.py build --compiler msvc
python setup.py install
python setup.py bdist_wininst

All the "tricks" with enviroment variables doesn't work for me.

If it helps somebody, all the thanks goes to: http://flintux.wordpress.com/2014/04/30/pycrypto-for-python-3-4-on-windows-7-64bit/

Answer 4

For Python 3.5 you can do this:

Install a PyCrypto binary from this site : https://github.com/sfbahr/PyCrypto-Wheels

The best way to do it, is:

64bits Python

c:\Python35\Scripts\pip.exe install --use-wheel --no-index --find-links=https://github.com/sfbahr/PyCrypto-Wheels/raw/master/pycrypto-2.6.1-cp35-none-win_amd64.whl pycrypto

32bits Python

c:\Python35\Scripts\pip.exe install --use-wheel --no-index --find-links=https://github.com/sfbahr/PyCrypto-Wheels/raw/master/pycrypto-2.6.1-cp35-none-win32.whl pycrypto

Of course replace c:\Python35\Scripts\pip.exe by your python pip path

To know your python version, run python and look at the architecture displayed between brackets:

C:\Users\utilisateur>python Python 3.5.1 |Anaconda 4.0.0 (64-bit)| (default, Feb 16 2016, 09:49:46) [MSC v.1900 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information.

Hope this can help.