Adding to Python Path Dir

Question

I have figured out how to temporarily append the path dir

import os, sys
sys.path.append('c:\\code')

... But how do I add a file permanently? I tried the following...

import os, sys
set PYTHONPATH=%PYTHONPATH%;C:\code

That would involve modifying your PATH in your Windows Settings somewhere. — Simeon Visser
– Simeon Visser, Commented Sep 4, 2014 at 0:30
Do you need to do it programmatically from within python? Or can you just set the environment variable externally like usual? — Henry Keiter
– Henry Keiter, Commented Sep 4, 2014 at 0:34
I looked externally and I am at a loss. I thought there was a way through programming in the shell. — SleepyViking
– SleepyViking, Commented Sep 4, 2014 at 0:40

Zero Piraeus · Accepted Answer · 2014-09-04 05:27:01Z

2

If you want to avoid setting environment variables, you can add a folder to your path by creating a .pth file in the folder %APPDATA%\Python\Python34\site-packages (you may have to create the folder).

For example, with %APPDATA%\Python\Python34\site-packages\anything.pth containing the single line

c:\code

... and c:\code containg the file woof.py with the following line:

MIAOW = "chirrup"

... we can check that it all works:

>>> from woof import MIAOW
>>> MIAOW
'chirrup'

edited Sep 4, 2014 at 5:27

answered Sep 4, 2014 at 5:15

Zero Piraeus

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1 Comment

SleepyViking Over a year ago

That worked like a charm!!!! I ran through your steps and accidentally did .path - after I fixed that typo it worked. Perfect!

shakew8 · Accepted Answer · 2014-09-29 14:19:00Z

0

I have found that the easiest way to set the environment variable is by following Computer > System Properties > Advanced System Settings > Environment Variables and editing PYTHONPATH manually. You can simply append it in the dialog box.

answered Sep 29, 2014 at 14:19

shakew8

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