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在第20讲动动手的第一题中:
我的想法是
0.首先检查前三位字符是不是三位大写字母
1.如果是的话,就接着判断接下来的是否为小写字母
2.上一过程一直持续到出现大写字母为止,并计算小写字符的个数
3.当出现大写字母时判断是否为三个,满足则说明是密码所在,并打印下来
代码如下:
str0 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
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qKWGc'''
#首先检查前三位字符是不是三位大写字母
#如果是的话,就接着判断接下来的是否为小写字母
#上一过程一直持续到出现大写字母为止
#当出现大写字母时判断是否为三个满足则说明是密码所在
lenth = len(str0)
j = 0
for each in range(lenth):
if str0[each].isupper(): #
if str0[each + 1].isupper(): #判断前三个字符是否是大写字符
if str0[each + 2].isupper(): #
if str0[each + 3].islower(): #如果第四个字符为小写
while str0[each + 3 + j].islower(): #判断小写字符的个数(j) 直到str0[each + 3 + j]为大写字符
if (j + each + 4) < lenth:
j = j + 1
if str0[each + 3 + j].isupper(): #
if str0[each + 4 + j].isupper(): #判断小写字符后的大写字符串的个数
if str0[each + 5 + j].isupper(): #
for i in range(j) : #循环次数为小写字符的个数
print(str0[each + 3 + j]) #打印全部的小写字符
else:
j = 0
else:
j = 0
else:
j = 0
else:
j = 0 #不满足条件则对j进行清零
但是不知道为什么打印出来的字符全部都是大写的,
这个想法应该可以实现相应的功能啊
不知道错在哪里
新人求助 |