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I'm trying to run a script that I've been able to run in the past. It stops with error:

ModuleNotFoundError: No module named 'cryptography.hazmat.bindings._constant_time'

I recently removed python 3.6 and installed python ActiveState:

ActivePython 3.6.0.3600 (ActiveState Software Inc.) based on
Python 3.6.0 (default, Jan 23 2017, 20:01:14) [MSC v.1900 64 bit (AMD64)] on win32

Things I've tried thus far:

Re-installing cryptography

Re-installing cryptography but I get an error:

Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\includ
e\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" /Tcbuild\temp.win-amd64
-3.6\Release\_openssl.c /Fobuild\temp.win-amd64-3.6\Release\build\temp.win-amd64-3.6\Release\_openssl.obj
  error: command 'cl.exe' failed: No such file or directory

  ----------------------------------------
  Failed building wheel for cryptography
  Running setup.py clean for cryptography
Failed to build cryptography
Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

Any help would be much appreciated. I'm fairly new to python but I'm at a loss

avariant
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Justin Thompson
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1 Answers1

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Looks like the version that was released today actually broke something; using cryptography==2.5 might get you past that error until they fix 2.6.

dtanabe
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