丶霁灵 发表于 2020-2-20 18:15:51

零基础学习python第020讲第一题,不知自己代码错在哪里


------------------内心独白-------------------

做python课后作业这感觉就让我回到了高中做物理和数学题的时候,
自己和老师答案做法不一样,并且自己还做错了,想了好久就是不知道自己错在了哪,死活不想放弃自己的做法。
这是我零基础学习python的第三天,脑瓜子都大了。。


------------------代码------------------------
def find_password(str0=''):
    j = 3
    k = (len(str0)-3)
    for i in str0:
      if i.islower():
            if (str0.isupper()) and (str0.isupper()):
                print(i,end='')
      j += 1
str3 = '''AAAAAAAAAAAA'''   #其实字符串有很长很多
str3 = str3.replace("\n",'')
print('密码为:',end='')
find_password(str3)

-----------思路------------------------------

这个问题是:
1. 请用已学过的知识编写程序,找出小甲鱼藏在下边这个长字符串中的密码,密码的埋藏点符合以下规律:
    a) 每位密码为单个小写字母
    b) 每位密码的左右两边均有且只有三个大写字母
然后我就想for循环应该从第第四个字母开始到倒数第四个字母结束,然后再看是不是小写字母,然后再看左右三个字母是不全是大写字母。
然后这是我和标准答案的区别:

------------------------------------------------
真怕自己提问多且简单被大佬埋汰{:10_284:}

zltzlt 发表于 2020-2-20 18:20:49

你没有判断左右两边仅有三个大写字母

zltzlt 发表于 2020-2-20 18:22:55

这样就行了:

def find_password(str0=''):
    j = 3
    k = (len(str0) - 3)
    for i in str0:
      if i.islower():
            if (str0.isupper()) and (str0.isupper()):
                if str0.islower() and str0.islower():
                  print(i, end='')
      j += 1


str3 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
lqNsYCyaQXBzrFUbkAUAWAKrDgDtAlGMBqWQhpEwquZqWZJpslUfMllCwWptqINjrOBTLuPzwvXNbLCx
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qKWGc'''# 其实字符串有很长很多
str3 = str3.replace("\n", '')
print('密码为:', end='')
find_password(str3)

丶霁灵 发表于 2020-2-20 18:27:10

zltzlt 发表于 2020-2-20 18:20
你没有判断左右两边仅有三个大写字母

真相了!!!知道真相的我眼泪掉下来!!!!

谢谢大佬!

jiaheng 发表于 2020-5-19 17:08:14

丶霁灵 发表于 2020-2-20 18:27
真相了!!!知道真相的我眼泪掉下来!!!!

谢谢大佬!

我也是这个错误。。。
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