Redirect console output to a file with errors python

Question

Apologies if this has been answered before.

I am trying to redirect my console output to a "log" file that includes any error messages. Currently I am able to send my print statements to a file using

sys.stdout = open(r'mydir\Log.txt', 'w')

My question is how do I add any error messages that may come up during my code? My script runs overnight and I am planning to have an email sent to myself with this file detailing where the (if any) error occurred, while also keeping the print statements.

Thank you!

In your case, I would look into the 'Logging to multiple destinations' and 'Using file rotation' sections — Wizard.Ritvik
– Wizard.Ritvik, Commented Oct 4, 2021 at 16:45
Probably the best way to do it is by writing your errors to sys.stderr and launch your puthon script with python scriptname.py 2>/path/yo/log/file, or just use the standard logging library — ale-cci
– ale-cci, Commented Oct 4, 2021 at 16:46
You can put that same file object on sys.stderr also. You may end up with some odd intermingling of data. If these all just status messages, start using the logging module instead of print. You'll get much more functionality. — tdelaney
– tdelaney, Commented Oct 4, 2021 at 16:46

Dharman · Accepted Answer · 2021-10-20 16:33:08Z

1

The logging module is what I went with. It works way better.

logging.info('message') was pretty much all I did.

edited Oct 20, 2021 at 16:33

Dharman♦

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answered Oct 20, 2021 at 15:00

smitty_werben_jagerm

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