Logging an unknown exception in Python

Question

I am getting an exception on an HTTP GET request (http.client.HTTPConnection.getresponse), but so far have been unable to determine the nature of the exception (my Python is fairly rudimentary). The code looks like this:

try:
    r = conn.getresponse()
except Exception as x:
    logger.error('Error getting data:' + str(x))

This just results in logs looking like Error getting data:''. I could trap all the different types of exception that HTTPConnection.getresponse can raise, but that seems ridiculous given there are so many possible exception types and I'm just trying to debug how the connection is failing. Is there a way to inspect the exception object?

Show it’s type(x) or for a full trace, pass exc_info=True into that log statement — donkopotamus
– donkopotamus, Commented Jul 2, 2020 at 0:27

kingkupps · Accepted Answer · 2020-07-02 00:36:14Z

2

You almost certainly want to use logger.exception if you're using Python's standard library logger which adds more info about the exception (including a call stack).

From the docs:

Logger.exception() creates a log message similar to Logger.error(). The difference is that Logger.exception() dumps a stack trace along with it. Call this method only from an exception handler.

If you want to specifically format the type of the exception in your log message, do:

try:
    r = conn.getresponse()
except Exception as e:
    logger.error('%s: %s', type(e), e)

answered Jul 2, 2020 at 0:36

kingkupps

3,5542 gold badges20 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Logging an unknown exception in Python

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related