Variable change unexpectedly on recursion?

Question

Context

I\'m currently attempting Reddit\'s /r/dailyprogrammer challenge.

The idea is to find a solution to an ASCII maze. Unfortunately the recursion is worki

Answer 1

newMaze = maze doesn't copy the list, it just creates another name pointing to the same object. To copy, you should import copy at the top of your program, then do newMaze = copy.deepcopy(maze). (You need a deep copy because maze is a list of lists, so you need to copy not only the outer list, but all the lists inside it too.)

In Python, assignment to a plain name (like blah = ...) never copies anything. If you want a copy, you must make one explicitly. The way to do that depends on what you're copying.