Executing and automatically storing all error messages into file

Question

Is there an easy way to execute a python script and then have all error messages save to a type of log file (csv, txt, anything).

class MyClass():
    def __init__(self, something):
        self.something = something

    def my_function(self):
        # code here

Or is the only way to add try and except statements everywhere and write the error messages to a file?

I think you're looking for the logging module: realpython.com/python-logging — MichaelJCox
– MichaelJCox, Commented Dec 5, 2019 at 16:48
Are the errors something you are throwing / checking yourself or do you want to generally store to disk whatever gets written to STDERR by a certain script? — norok2
– norok2, Commented Dec 5, 2019 at 16:53
en.wikipedia.org/wiki/Standard_streams#Standard_error_(stderr) — norok2
– norok2, Commented Dec 5, 2019 at 17:03

Elanthingal Chandrasekaran · Accepted Answer · 2019-12-05 16:50:01Z

1

Yes you can do that using python logging

answered Dec 5, 2019 at 16:50

Elanthingal Chandrasekaran

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MichaelJCox · Accepted Answer · 2019-12-05 17:11:48Z

0

Here's a specific example, using the info from https://realpython.com/python-logging/ with your code:

import logging

logging.basicConfig(filename='app.log', filemode='w', format='%(name)s - %(levelname)s - %(message)s')
logging.warning('This will get logged to a file')

class MyClass():
     def __init__(self, something):
          self.something = something

     def my_function(self):
          logging.warning('my_function entered...')

After you instantiate your class and call my_function, you should get logging output in your log file (here app.log):

root - WARNING - This will get logged to a file
root - WARNING - my_function entered...

answered Dec 5, 2019 at 17:11

MichaelJCox

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