Windows 10: How to install NumPy using PIP on Windows 10

NumPy (Numerical Python) is an open-source library for the Python programming language. It is used for scientific computing and working with arrays. Apart from its […]

This article How to install NumPy using PIP on Windows 10 first appeared on TheWindowsClub.com.

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Windows 10 pip not installing Python2 packages while Python 3.6 is installed

For reference, running C:\Python27\python.exe -m pip install numpy and python -m install numpy (for Python 3.6, outside C:\Python27\) yielded no errors for me.

Troubleshooting

You may wish to consider one or more of the following.

Uninstall numpy

Uninstall numpy (or any requirements that are already met, assuming you do not need them) in Python 3.6 (ex. python -m pip uninstall numpy) and then install e.g. numpy again in Python 2.7.

Use A Virtual Environment

Assuming that your Python 2.7 installation will allow it:

• Run e.g. C:\Python27\python.exe -m pip install virtualenv to download the virtualenv virtual environment package.
  
• Run C:\Python27\python.exe -m virtualenv C:\path\to\virtual\env to create an isolated 2.7 environment in which you can install numpy (or any other necessary packages) for your project.
  
• Note that you will need to "activate" (and perhaps "deactivate") this environment from the command line with the activate.bat (or deactivate.bat) batch file(s) located in e.g. C:\path\to\virtual\env\Scripts.
  

Check pip Paths

Running e.g. C:\Python27\python.exe -m pip list and ex. python -m pip list (again, outside C:\Python27\) should output different lists of installed packages (one for 2.7 and one for 3.6, respectively).

If they do not, you may wish look for any duplicate references to e.g. C:\PythonVersion\Scripts (where pip.exe resides) in your PATH\Path (User\System) variables and remove them. In short, you should only have a single reference to e.g. C:\Python36\Scripts (i.e. no C:\Python27\Scripts).

Reinstall Python 2.7 and Python 3.6

• Completely uninstall Python 2.7 and Python 3.6, taking note of any packages you may wish to reinstall later.
  
• Install Python 2.7. Do not choose any option to add Python 2.7 to your path variable(s).
  
• Install Python 3.6. Add it to your path variable(s). You do not need to select the option to add pip to your path variables if you are using e.g. python -m pip (this is only necessary if you want to use the pip installation for Python 3.6 directly as pip [options] from the command line)
  

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Is it time for Windows 10 already?

Here's a good step by step guide on doing a fresh install.

How to clean install Windows 10 from a USB drive - Software - Feature - HEXUS.net