Since my script works well when calling it from command line. I'm trying to run this code on schedule with cron:
with open('out.txt', 'a') as f:
f.write('Hello world! \n')
And I've set chmod a+x hello_world.py
But I want to run it in Nitrous.io with python3.3, since which python and which python3.3 returns /home/action/.parts/bin/python and /usr/bin/python3.3 respectively. I have tried to add some shebangs at the start of the script.
#!/usr/bin/python
#!/usr/bin/python3.3
#!/usr/bin/env python
#!/usr/bin/env python3.3
#!/home/action/.parts/bin/python (Weird, I know...)
The command python returns a 2.7.6 python shell and python3.3 or /usr/bin/python3.3 returns a 3.3.5 python shell. And ls /usr/bin/python* outputs:
/usr/bin/python /usr/bin/python2.6-config /usr/bin/python3.2-config /usr/bin/python3.3m
/usr/bin/python2 /usr/bin/python2.7 /usr/bin/python3.2mu /usr/bin/python3.3m-config
/usr/bin/python2.5 /usr/bin/python2.7-config /usr/bin/python3.2mu-config /usr/bin/python-config
/usr/bin/python2.5-config /usr/bin/python2-config /usr/bin/python3.3
/usr/bin/python2.6 /usr/bin/python3.2 /usr/bin/python3.3-config
I also added python paths to PATH and PYTHONPATH:
#PATH=/usr/bin/python3.3:/home/action/.parts/bin:/home/action/.parts/sbin:/home/action/.parts/autoparts/bin:/home/action/.parts/autoparts/bin:/home/action/.parts/autoparts/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/action/.gem/ru
by/1.9.1/bin
#PYTHONPATH=/usr/bin/python3.3
pidof cron is returning the Process ID of cron.
I tried to redirect the output with ... > /path/to/cron.log 2&>1 without success. And derivatives...
My crontab -e file looks like:
PYTHONPATH=/usr/bin/python3.3
* * * * * /usr/bin/python3.3 /home/action/workspace/hello_world.py
But I can't get it to work... Can anyone help this litle guy ? :)
My guess - your script is working fine. No output, no problem. Just not sure where the output file is.
For your code, try an absolute path.
with open('/tmp/out.txt', 'a') as f:
f.write('Hello world! \n')
As an aside - the #! doens't matter.
When you prefix the python script with the python interpreter:
/usr/bin/python3.3 <any-file>
the python interperter, not the shell, executes the file and will ignore the #! line.