FAQ: Technical Interview Problems in Python: Linked Lists - Find Merge Point

This community-built FAQ covers the “Find Merge Point” exercise from the lesson “Technical Interview Problems in Python: Linked Lists”.

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This exercise can be found in the following Codecademy content:

Technical Interview Practice: Python

FAQs on the exercise Find Merge Point

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I am having a problem getting the site to accept my solution to this exercise. I have a working solution in the code editor (tested by also running locally in a script on my machine) but when I run it on the site I get the error: " Is the merge_point() function defined within merge_point.py ?" The answer is yes, that function is defined in the merge_point.py file, I’ve attached a screenshot showing that to be the case. Strangely the console output on the side also shows the code running correctly (the “found target” line is my own print statement so it should pass. However the error is preventing me from progressing in the course.

Interestingly that error only appears when my code for the complete solution is run. When I take out any lines from the function (resulting in the code not returning the correct result), I get " Function should have produced node containing 'q' , but x returned instead". So it seems like the back-end is still able to see the function and run it.