Python Tkinter - Recursionerror: Maximum Recursion Depth Exceeded While Calling A Python Object

This is a weird issue which I cannot solve myself. Basically I am making Minesweeper using python 3.6, and Tkinter. The game plays fine, up until about halfway through a hard game

Solution 1:

The problem, or at least one problem, is that you are calling mainloop more than once, and you are calling it from an event handler. That is what is ultimately causing your infinite recursion.

As the name implies, mainloop is an infinite loop itself. It runs until the main window is destroyed. When you press a key or button, mainloop is what runs the command associated with the key or button. If that command is MinePressed, it will eventually cause mainloop to be called again from inside the original call to mainloop.

Because mainloop never exits (because the root window is never destroyed), you have an infinite loop calling an infinite loop calling an infinite loop, ..., and none of those inner loops ever exit. Eventually you run out of stack space when you get a thousand copies of mainloop running.

You need to move root.mainloop() out of MinePressed and put it as the last line in your file, e.g.:

SelectSize()
input()
root.mainloop()

Though, maybe it goes before input() -- I have no idea what that line of code is for.