Install Numpy on virtualenv on Windows

Speaking of Python, numerical calculation, the representative package is Numpy, but installation of this is not straightforward. Many people will be addicted to seeing hell. Especially on Windows.

The easiest way is to use a Python distribution that already has Numpy built in, such as Anaconda (also written on the official website). However, it is common to configure the environment with virtualenv and install it with pip for normal Python applications, so to be honest, I would like to follow that flow.

Therefore, I will show you how to install with pip (strictly speaking, how to install with pip).

  1. Download the Windows installer from the official website (http://sourceforge.net/projects/numpy/files/NumPy/)
  2. Open the dropped exe file with 7zip etc. There is an exe file for the CPU such as SSE inside, so pull it out (in the case of Windows, it looks like numpy-1.x.x-sse3.exe).
  3. Enable virtualenv and run the exe with ʻeasy_install easy_install c:\path\to\extracted\numpy-1.x.x-sse3.exe`

This should only be installed inside virturlenv. I think you can use this method of "dropping the installer and using easy_install", so it's good to remember.


Reference
windows + virtualenv + pip + numpy (problems when installing numpy)

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