IOError: Please specify user or filename to write.

[ophirpeleg]

Hey,
The program works well until I try to set an alarm.
It said that I need specify user of filename to write, how do I fix this issue?
a BIG thanks!

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/pi_alarm_env/pi_alarm/app/controller.py", line 51, in set_alarm
    scheduler.schedule_alarm(weekday, hour, minute)
  File "/opt/pi_alarm_env/pi_alarm/app/scheduler.py", line 79, in schedule_alarm
    self.cron.write()
  File "/usr/local/lib/python2.7/dist-packages/crontab.py", line 311, in write
    raise IOError("Please specify user or filename to
``` write.")
IOError: Please specify user or filename to write.

[ajpierce]

Hi! Thanks for your interest, and I'm sorry about the bug.

I ran a pip freeze on my local environment here, and it looks like the version of crontab i'm running is python-crontab==1.7.2. I wonder if, because I haven't tried updating the software in two years, this is the cause of the problem?

In the short term, change which version of python-crontab you install (in the setup.sh file), and I will look at modifying the code to work with the latest version 👍

[ajpierce]

Ok, I am able to recreate this issue by upgrading my version of python-crontab to the latest. Fix incoming shortly

[ajpierce]

Thanks for reporting this! The bug should now be resolved in commit 7acad1d