python - 如果语句无效语法错误

Question

我无法弄清楚错误的出处，因为据我所知代码是正确的，并且没有明显的错误。

码:

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")

错误可能发生在if语句末尾冒号的print(“gridsize，gridsize”)上方的行上。我不知道是什么问题。任何帮助表示赞赏。

Answer 1

我想是因为这条线

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

您缺少grid_list[grid_list.index(ant_position)[0]中的右方括号

我相信应该是grid_list[grid_list.index(ant_position)][0]。

编辑如Peter在注释中所建议，将grid_list.index(ant_position)的结果存储在变量中，并在需要时使用该变量。