I doubt it is a memory issue. Tell us what investigation you did that lead you to that conclusion.

Python code doesn't normally just stop working for no reason. I expect that you changed your code in some way and introduced a bug.

This is not a help desk for debugging your own code. If you need help with that, I recommend Reddit's r/learnpython, StackOverflow, or the Python-List mailing list.

If you still think that this is a bug in Python, not in your own code, please show us the smallest program you can that demonstrates the problem:

- what you did
- the result you expected
- the result that you actually got

For example, try this:

    L = [1, 2, 3]
    L.insert(0, 999)
    print(L)
    # you should get [999, 1, 2, 3]


If you get that result, your Python is working fine and the bug is in your code.