def create_world(rows,columns):
    world=[['x']*columns for _ in range(rows)]
    return world
def print_world(nested_list):
    for _ in nested_list:
        print(*_, sep='')


world=create_world(rows=15,columns=35)
world[3][5]='O'
player_pos=world[3][5] # player_pos = 'O' as expected but i want it to be [3][5]
#print_world(world)