Python 3 ModuleNotFoundError: No module named 'numpy'

Question

I trying to run a program in python 3 that uses numpy but it gives me the error ModuleNotFoundError: No module named 'numpy'. I am using Windows 10. I tried running pip install numpy and it says pip is not a recognized command

Answer 1

Add "way to folder with your python interpreter" and "way to folder with your python interpreter"\Scripts\ to PATH variable. Computer -> Properties -> Extra options -> Environment variables.

Answer 2

You need to add python to your environment variables

1. Computer -> System Properties (or Win+Break) -> Advanced System Settings
2. Click the Environment variables button (in the Advanced tab)
3. Edit PATH and append ;C:\Python27 to the end (if you need substitute your Python version)
4. Click OK. Note that changes to the PATH are only reflected in command prompts opened after the change took place.

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If you are running python 3.6 you will need to add python to your environment path through command prompt

Windows allows environment variables to be configured permanently at both the User level and the System level, or temporarily in a command prompt.

To temporarily set environment variables, open Command Prompt and use the set command:

set PATH=C:\Program Files\Python 3.6;%PATH%
set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib

These changes will apply to any further commands executed in that console and will be inherited by any applications started from the console.

To change System variables, you need non-restricted access to your machine (i.e. Administrator rights).

If you were to run python -v it should now work

This came directly from the python documents section 3.3.1

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Now after you restart you should be able to access python through the command line. If you are running 2.7.9+ or 3.4+ pip will come prepackaged with python. However, if you are running an earlier version of python

Per https://pip.pypa.io/en/stable/installing/#do-i-need-to-install-pip:

Download get-pip.py, being careful to save it as a .py file rather than .txt. Then, run it from the command prompt:

python get-pip.py You possibly need an administrator command prompt to do this. Follow Start a Command Prompt as an Administrator (Microsoft TechNet).

Thanks to How do I install pip on Windows?