How to add to the pythonpath in Windows?

Question

I have a directory which hosts all of my Django apps (C:\My_Projects). I want to add this directory to my pythonpath so I can call the apps directly.

I have tried adding C:\My_Projects\; to my Path variable from the Windows GUI (My Computer > Properties > Advanced System Settings > Environment Variables). But it still doesn't read the coltrane module and generates this error:

Error: No module named coltrane

Answer 1

Just append your installation path (ex. C:\Python27\) to the PATH variable in System variables. Then close and open your command line and type 'python'.

Answer 2

The python 2.X paths can be set from few of the above instructions. Python 3 by default will be installed in C:\Users\\AppData\Local\Programs\Python\Python35-32\ So this path has to be added to Path variable in windows environment.

Answer 3

These solutions work, but they work for your code ONLY on your machine. I would add a couple of lines to your code that look like this:

import sys
if "C:\\My_Python_Lib" not in sys.path:
    sys.path.append("C:\\My_Python_Lib")

That should take care of your problems

Answer 4

You can also add a .pth file containing the desired directory in either your c:\PythonX.X folder, or your \site-packages folder, which tends to be my preferred method when I'm developing a Python package.

See here for more information.

Answer 5

You need to add to your PYTHONPATH variable instead of Windows PATH variable.

http://docs.python.org/using/windows.html