If statement invalid syntax error

Question

I cannot figure out where the error is coming from because as far as i can see the code is correct and has no obvious errors in it.

code:

if grid_list[grid_list.index(ant_position)][0] == 1 or grid_list[grid_list.index(ant_position)][1] == 1:
    print("boom")
    if grid_list[grid_list.index(ant_position)][1] ==1 and grid_list[grid_list.index(ant_position)][0] == 1:
        print("1,1")
    else:
        if grid_list[grid_list.index(ant_position)][1] == grid_size or grid_list[grid_list.index(ant_position)][0] == grid_size:
            if grid_list[grid_list.index(ant_position)][0] == grid_size:
                print("gridsize,1")
            else:
                print("1,gridsize")
        else:
            if grid_list[grid_list.index(ant_position)][0] == 1:
                print("1,something")
            else:
                print("something,1")
else:
    if grid_list[grid_list.index(ant_position)[0] == grid_size or grid_list[grid_list.index(ant_position)][1] == grid_size:
        print("boom")
        if grid_list[grid_list.index(ant_position)][1] == grid_size and grid_list[grid_list.index(ant_position)][0] == grid_size:
            print("gridsize,gridsize")
        else:
            if grid_list[grid_list.index(ant_position)][0] == grid_size:
                print("gridsize,something")
            else:
                print("something,gridsize")
    else:       
    print("boo")

The error is supposedly occuring on the line just above the print("gridsize,gridsize") on the colon at the end of the if statement. I have no idea what the problem is. any helps appreciated.

Answer 1

I suppose it is because of this line

if grid_list[grid_list.index(ant_position)[0] == grid_size or grid_list[grid_list.index(ant_position)][1] == grid_size:

you are missing a closing square bracket in grid_list[grid_list.index(ant_position)[0]

It should have been grid_list[grid_list.index(ant_position)][0] , I believe.

Edit As Peter suggested in the comments, store the result of grid_list.index(ant_position) in a variable and use the variable wherever needed.