import turtleimport randomturtlehtturtlespeed0row = 0column = 0cell_list = 0 0 0 0 0 0 0 0 0 0 cell_opening = 0def down_opening1 global cell_opening turtlefd10 turtlebk1 turtlepenup tur

The error "IndexError: list index out of range" occurs because the variable "column" is being incremented inside the nested loop, but the loop is already iterating over the range of "column" values.

To fix this error, you can remove the line "column += 1" inside the nested loop. The "column" variable will be automatically incremented by the for loop.