ValueError when importing a praw script

Question

can someone help me?

Let me explain myself better. I have this folder structure:

praw-test
    jobs
        __init__.py
        redisJob.py
    main.py

and if I run directly python jobs\redisJob.py it works just fine.

But, if I try to import the file redisJob.py in main.py it gives me this error:

File ".\main.py", line 13, in <module>
    from jobs.redisJob import DailyJob
  File "D:\git\praw-test\jobs\redisJob.py", line 5, in <module>
    import praw
  File "D:\git\praw-test\env\lib\site-packages\praw\__init__.py", line 14, in <module>
    from .reddit import Reddit  # NOQA
  File "D:\git\praw-test\env\lib\site-packages\praw\reddit.py", line 5, in <module>
    from update_checker import update_check
  File "D:\git\praw-test\env\lib\site-packages\update_checker.py", line 11, in <module>
    import requests
  File "D:\git\praw-test\env\lib\site-packages\requests\__init__.py", line 53, in <module>
    major, minor, patch = urllib3_version
ValueError: not enough values to unpack (expected 3, got 1)

Just to make sure, the import command is

from jobs.redisJob import DailyJob

Did I do something wrong?

Update I found a workaround. I just need to import urllib3 in my main.py then assigning the correct version.

import urllib3
urllib3.__version__ = '1.21.1'
from jobs.redisJob import DailyJob

These three lines have to be on top of my script.

Answer 1

It appears that you're importing under a different environment. Different launch techniques can spawn different processes and shells; this could lead to the environment variable having a value other than expected.

I don't know enough SDE details to give you a definitive solution, but I can certainly recommend a simple debugging line. Just before the problem line, insert

print urllib3_version

See what you get for the value in each launch method. I expect that there's some implementation detail, such as the values being concatenated somehow, or having some missing.

You can work around this with a check:

if len(urllib3_version) == 3:
    major, minor, patch = urllib3_version
else:
    # This will depend on what you see in the single value

You may need to split a string, supply defaults for missing values, or some other adaptation.