PYTHONPATH not set automatically in virtualenvs

Question

I installed a virtualbox with xubuntu-16.04.2-desktop on windows 10. when I create an env running a mezzanine app, I get this error:

Traceback (most recent call last):
File "manage.py", line 7, in <module>
from mezzanine.utils.conf import real_project_name
ImportError: No module named 'mezzanine'

the same when I try to import modules:

(test) mauri@bison:~$ python -c "import django"
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named 'django'

the problem seems to be the PYTHONPATh, not set correctly. If i set it manually, everything works fine.

(test) mauri@bison:~$ export 
PYTHONPATH="/home/mauri/envs/test/lib/python3.5/site-packages/"
(test) mauri@bison:~$ python -c "import django"
(test) mauri@bison:~$ env
XDG_VTNR=7
LC_PAPER=cs_CZ.UTF-8
LC_ADDRESS=cs_CZ.UTF-8
 XDG_SESSION_ID=c1
....

any idea why the PYTHONPATH is not set automatically when I create envs?

thank you so much, and sorry if I miss anything in the explaination, I m pretty new in this field.

The PYTHONPATH environment doesn't get set when you activate a virtual environment. That isn't how it works. Run python and do import sys; print(sys.path), the site-packages directory should be automatically added. — Graham Dumpleton
– Graham Dumpleton, Commented Jul 3, 2017 at 11:13
this is the result (test) mauri@bison:~$ python -c "import sys; print(sys.path)" ['', '/usr/lib/python35.zip', '/usr/lib/python3.5', '/usr/lib/python3.5/plat-x86_64-linux-gnu', '/usr/lib/python3.5/lib-dynload', '/usr/local/lib/python3.5/dist-packages', '/usr/lib/python3/dist-packages'] — mauri
– mauri, Commented Jul 3, 2017 at 12:01

Karim N Gorjux · Accepted Answer · 2017-07-04 01:21:46Z

1

Check your bash* if you have any alias overriding the python setup. You can easily check with the command alias from bash:

$ alias
alias ll='ls -alh'
alias ls='ls -G'
...

answered Jul 4, 2017 at 1:21

Karim N Gorjux

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1 Comment

mauri Over a year ago

Yes, that was the problem. Removed the alias, everything now works perfectly.

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