Properly read the debug code and try to isolate what and where the problem may be from it.
Most errors that are made are easily solved by checking this code and are usually syntax errors or similar "human" errors.
If you cannot solve the problem via the debug code, then try and look at areas in the code related to the problem and check for common errors.
If you are past this stage then it may be a larger or more specific problem. Approch using trial and error to change possible problems could help.
If the problem is still not isolated then help can be found in many online forums and python help pages.
Hope this helps!
For myself I generally just skip the query and try to do something else, then come back to it later. I look up the answer to a problem if either it was on an real competition I participated in, UK Essays Help or it’s on an online judge and I’ve come back to it numerous times and feel influenced that there’s a appealing simple solution that I should almost be able to get.