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I am running Python 2.7 and Python 3.4 on Windows and am trying to install packages to Python 3.4, while Python 2.7 is my default. I'm using the same idea as in the answer to this post, as I got the same Windows VCVARSALL error described in the post.

For example I am currently trying to install numpy-1.9.2+unoptimized-cp34-none-win_amd64.whl as my Computer is a Windows 8.1, 64 bit machine. However, I get the error numpy-1.9.2+unoptimized-cp34-none-win_amd64.whl is not a supported wheel on this platform and don't know why.

smci
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Jojo
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  • Are you using `pip` or `pip3`? – jonrsharpe Jun 22 '15 at 15:09
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    Then try `pip3`, or use the `cp27` wheel - you can't install that version of `numpy` to Python 2.7. – jonrsharpe Jun 22 '15 at 15:10
  • @jonrsharpe Sorry, I might be confused. I want to install that version of `numpy` to Python 3.4 – Jojo Jun 22 '15 at 15:18
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    Yes, but **that's not what you're doing**. `pip` will be trying to install things to Python 2.7, `pip3` to 3.4. – jonrsharpe Jun 22 '15 at 15:19
  • @jonrsharpe Thank You. However, when I replace `pip` with `pip3` in my Command Prompt, I get the Error `pip3 is not recognized as an internal or external command`. Could you suggest how I proceed from here? – Jojo Jun 22 '15 at 15:21
  • Try making the working directory `C:\Python34\Lib` and running `pip` there. Otherwise, I suggest you spend some time researching how to get Windows set up for Python dev - there are lots of resources on that already. You may find it easier with a `virtualenv`, so you can specify the interpreter once then be sure you're using the same one. – jonrsharpe Jun 22 '15 at 15:25

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