Question

I had one script with custom exception classes in the form of:

class DirectionError(Exception):
    pass

I had my functions in the same script in the form of:

def func1(x):
    if x == 1:
        raise DirectionError

I put my function calls into a try/except/except block in the form of:

try:
    func1(2)
except DirectionError:
    logging.debug("Custom error message")
    sys.exit()
except:
    logging.debug(traceback.format_exc())

I subsequently moved the functions into a seperate mytools.py file. I import the mytools.py file into my main python script.

I moved the custom exception classes into the mytools.py file but exception is not reaching the main python script.

How do I get those functions in the mytools.py file to send the exception back to the try/except block in my main python script?

Thanks.

Answer 1

It depends on how did you import mytools.
If you imported it as

import mytools

then changing:

except DirectionError:

to:

except mytools.DirectionError:

should work.

If you imported only your function with:

from mytools import func1

change it to:

from mytools import func1, DirectionError

Basically, you need to import the DirectionError class into your main code and reference it correctly.

Besides, your exception raise only when you call func1(1), and you are calling func1(2).