-1

我有这本字典：

flips_left = {'front flip': True,
              'side flip': True,
              'back flip': True
}

所有的值都是真

我有这个while循环：

while flips_left[flip_choice] == True:
            flip_choice = raw_input("Do a flip ")
            if flip_choice in flips_left:
                if flips_left[flip_choice]:
                    print flip_lines[flip_choice]
                    flips_left[flip_choice] = False
                else:
                    print "You already did a %s" % flip_choice
            else:
                print "That is not a type of flip"

        print "Great! You completed the WOD!"

当dict中的所有值都为false时，我基本上想要一种退出while循环的方法。

4

2 回答 2

3

any()测试通过的迭代的每个元素的真实性。

while any(flips_left.itervalues()):
于 2013-10-07T04:16:15.493 回答
1

这是另一种构建代码的方法，可以避免flips_left.itervalues()重复扫描

for flip in flips_left:
    while True:
        flip_choice = raw_input("Do a flip ")
        if flip_choice in flips_left:
            if flips_left[flip_choice]:
                print flip_lines[flip_choice]
                flips_left[flip_choice] = False
                break
            else:
                print "You already did a %s" % flip_choice
        else:
            print "That is not a type of flip"

print "Great! You completed the WOD!"
于 2013-10-07T04:30:40.660 回答