我正在尝试查看一个单词或句子是否包含字母表中的每个字母,但我无法打印出不在该句子/单词中的所有字母。
alpha = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t'
,'u','v','w','x','y','z']
x = raw_input('')
counter = 0
counter2 = 0
for i in range(len(x))
counter += 1
for o in range(26):
counter2 += 1
if alpha[counter2] not in x[counter]:
我卡在那里了...