Question

I am using supervisor to run a python script:

[program:twitter_track]
autorestart = true
numprocs = 1
autostart = false
redirect_stderr = True
stopwaitsecs = 1
startsecs = 1
priority = 99
command = python /home/ubuntu/services/twitter.py track
startretries = 3
stdout_logfile = /home/ubuntu/logs/twitter_track.log

But the process fails to start. Here is what the error log says:

Traceback (most recent call last):
  File "/home/ubuntu/services/twitter.py", line 6, in <module>
    from mymodule.twitter.stream import TwitterStream
ImportError: No module named mymodule.twitter.stream
Traceback (most recent call last):
  File "/home/ubuntu/services/twitter.py", line 6, in <module>

It seems that obtain mymodule, but if I run twitter.py on it’s own, everything works fine, it only throws this error when I run it through supervisor.

I added mymodule to the PYTHONPATH in my ~/.profile file like so:

export PYTHONPATH=$PYTHONPATH:/home/ubuntu/lib

Is there any reason why the script would work when run through terminal but not when run through supervisor? Any help would be appreciated.

Answer 1

Add the PYTHONPATH definition to the environment directive in the supervisord configuration file. It should go under your [program:twitter_track] section, like so:

environment=PYTHONPATH=/home/ubuntu/lib/

This will ensure that that your python process sees the proper PYTHONPATH when supervisord starts it.