Not able to install cryptography package in python

Question

I tried to search a lot before asking it here, but unfortunately couldn't find anything helping.

I want to install cryptography package in python3.4.3 64bit version running on (windows 64bit} machine.

I am getting the following error:

{

generating cffi module 'build\\temp.win-amd64-3.4\\Release\\_constant_time.c'

generating cffi module 'build\\temp.win-amd64-3.4\\Release\\_openssl.c'

building '_openssl' extension

error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat).

}

I do have visual studio 2015 installed and I could find vcvarsall.bat manually, also my environment variable are pointing to correct folder as suggested in other threads. VS90COMNTOOLS=C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\Tools

These are the sites i already went through looking for help but in vain.

1) Changing the value for VS90COMNTOOLS,

2) I tried with different versions of visual studio greater than 10 ie 2010,2012,2013.

3) Python PIP has issues with path for MS Visual Studio 2010 Express for 64-bit install on Windows 7

4) Error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat)

5) https://cryptography.io/en/latest/installation/

Answer 1

We ship a statically linked wheel for Windows (our install instructions mention this) so all you need to do is be running the latest pip (as of June 2016 this is 8.1.2). To upgrade your pip you can do python -m pip install -U pip ( pip install -U pip will raise an error due to the way Windows does active file locking).

Once that is installed pip install cryptography will grab the wheel and not require a compiler at all.