Python selenium error handling

Question

I have a python selenium script that runs through a loop like this...

for i, refcode in enumerate(refcode_list):

    try:
        source_checkrefcode()
    except TimeoutException:
        pass
        csvWriter.writerow([refcode, 'error', timestamp])

If there is a problem during the source_checkrefcode then the script crashes with an error.

How can I add error handling to this loop so that it just moves to the next item instead of crashing?

Hassan Mehmood · Accepted Answer · 2016-05-17T10:32:39.837

10

You can add a check over exception message, below is the sample code for your understanding.

for i, refcode in enumerate(refcode_list):
    try:
        source_checkrefcode()
    except Exception as e:
        if 'particular message' in str(e):
            # Do the following
            # if you don't want to stop for loop then just continue
            continue

edited May 17 '16 at 10:32

answered May 17 '16 at 10:26

Hassan Mehmood

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My original code looks out for TimeoutException but your example uses Exception. Will this new code still catch the TimeoutException as well? – fightstarr20 May 17 '16 at 10:48
Yes, Actually Exception will catch all types of exceptions. Then you can add a check on its string message. For example. If 'TimeountException' in str(e): do this elif 'Another Exception' in str(e): do this and so on – Hassan Mehmood May 17 '16 at 10:49

score 0 · Answer 2 · edited May 23 '17 at 11:45

I agree with Hassan's Answer. But if you use continue then you won't process any other block of code.

for i, refcode in enumerate(refcode_list):
    try:
        source_checkrefcode()
    except Exception as e:
        if 'particular message' in str(e):
            # Do the following
            # if you don't want to stop for loop then just continue
            continue
    # another code of block will skip. Use pass or continue as per your requirement.

You must understand the difference between pass and continue Link

Python selenium error handling

2 Answers2