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鱼C论坛»论坛 › 编程语言专区 › Python交流 › 求助！第20讲动手1，求大佬帮忙找出问题，谢谢！！
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[已解决]求助！第20讲动手1，求大佬帮忙找出问题，谢谢！！

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Mmyw
发表于 2019-8-7 18:38:16 | 显示全部楼层 |阅读模式

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str1 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
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qKWGc'''



i = 3
length = len(str1)
while i < length - 4 :
    before = str1[i-3] + str1[i-2] + str1[i-1]
    last = str1[i+1] + str1[i+2] + str1[i+3]
    if str1[i].islower() :
        if before.isupper():
            if str1[i-4].islower() :
                if last.isupper() :
                    if str1[i+4].islower() :
                        print(str1[i],end = '')
                        i += 1
                    else :
                        i += 1
                else:
                    i += 1
            else :
                i += 1
        else :
            i += 1
    else :
        i += 1
#结果为：uilovefisdhc，多了两个字母（u和d），不明白问题出在哪里了，求大佬指出！！
最佳答案
月排行榜 / 总排行榜
zltzlt
2019-8-8 08:03:11
分开检测就可以了
  1. str1 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
  2. lqNsYCyaQXBzrFUbkAUAWAKrDgDtAlGMBqWQhpEwquZqWZJpslUfMllCwWptqINjrOBTLuPzwvXNbLCx
  3. oFRritKRpJgBOaGPZdkUzvYnvYmAlEsVmKRXqyQUOdCBqLYyboOYeAQNLnkuiDXCiNiksSSRpDMVQQgs
  4. TmYThnppfKSmkpjjceGLaMOvYgsvNkGENKgGtUSzVPlLMeephDKrWGNpAxBqRiCnQIuKwDZurIRsznUp
  5. xhstMWpHdZzqeEnttlAHiWbhbIJpwKBAGsFWthBiwBDKTFzIUamELZJFLbmqOmwBIYBJIofAUyxTLUEm
  6. LcOXzjIHFcfUfEWccbWzhVuIZMdTVsOaNsLTpHjrvFaYTnJUrqaYnUmbobfOXXtkjKjFUEhVNlPWeaIY
  7. uABNuEDKFWiUaqQiBHGsgEmDSKiJKLkkzFWlobXIyUlDzGcwDnEOwwWxgFpebsslmKItazIYctPROSJp
  8. ImDHusQIkoFQSmuqwdcPNERvflfHtkGTrtbQXqZUsazoxmbVTPIuuxKvfALAaGnIuIZwczCcoIRMncBs
  9. timFGHPJPaHMPTLjsBjIwbbzKyghaDTUStzJceaYAneywwpvdiUJifPHtXmAwZPChWsDmwonzeeQCEiB
  10. xWsJLAtrdVEOBxEaYiSabHdUwlXlDOAKzZUwozJoBGvnFttDkXdYdjQSzzhTIPfYpWVFdiFIqSbyPZIi
  11. VoXunBPbAJVMWluPcIfHmjPeHaTyClCvTOucEYEZXbVDiZMsfeuruDGMmQEsHutzvzVmWvCoPRguBiHh
  12. taTeaguPmNuAxzYJLEcdoApfIFBaLUqettjTJNlHZYlJZRRoKXEvFnoUHdPjDuXuTAubGODkHAokpItw
  13. SlEwhjrUSlfMawWlTMciWAzVcgPcqCHIaogokYAWGsvWZzBfJqzxIkCNvHDvBkOMCyeYXzVVuRJLQIOy
  14. BMoVPgFLOagDxyPfWxTtZQNCLOrVVclPzMNYruNUyMOBKxBvinxuGMAAfndhPsROtkOJAAJQSxpmTzXm
  15. CmEwZOhlItvETUneqvdKLghLyREjuJWRFjVVuNMiPuvvmRaEUmjCXDVuMRAvBuHUYGKPXthWISIbueRp
  16. uvxpmqclmrXpAGFrxhJGxQwlrbkHEmcEUooCoPqGzbrCfIWmtUKmzzXvcqbhxKcAwXCNjbJDWDndKiLK
  17. HwaFKyhXJQgHjIaTfIJrkhUpTHJZebRertDigQtDKxGerMRgHWFTrqqZlcBjAUfTZdFlZCAEZnhzgTIy
  18. gJSsWJjFcCVoFonAfKPTOhTxjxTRtzSKLoIOScEwBCDvWFDVGpBOpijqdwvugoYsyuIOZJTcySDrzy
  19. wBxediHOIYgasrUIDsNZcParqTGfTaBZHoSssXGtiCVvLReyoiitzMpsouqUeMHGWwDMgBaQTRkxPwNP
  20. XsvyFVXfjgKuamMTsEsbeKDgAdVndyDleenPBcXWKGPcDsALDajkCEGufvbtyXUZnelqISbQnHphDoTH
  21. RMIxMKclpWSvQHkzRhdAehBVaKYaXRPMpGaeRxvTRVFfewirvIDoGvYTAvKSoMFCLUNVFVKrYMeYtBrS
  22. KgiBOjvliNOHLrmztypGhQjtpEQwzVfpVqsTUPvOCPzgqOuvLXJBQZHLmSwGTxEMgCAbogXombCiBDNX
  23. BvGtXjrGWbWHtNCoRuqIZPhBQXZiNUhbmzOiyByAoMSBvusppiPVibIqmLXwXEVfcEAyNeUxaEZThULu
  24. mkGmoLrpOEktwRluXvOmmfEWxZkxUNIqZKuzbaUmLKBYrXMmdOYLEzljzbSJnqRbSiAFyUNyyieKITkh
  25. mvkKyosXKCaTsXQIKczJmxuqIEKeGGGwZyWTolQynlWngjDzFMlwhJFEmODeycbEfxgSRbIXySfwlhZZ
  26. BUBhKyGBHRzWGRXAzarcmSDORvaOMOqYlcVIMwlHGtrLMhFWioqeKfvsJdTXmfQzavzSzCRrVzLFMaBT
  27. DMOPFJcjzXcPvBkzacRmVKTQAvVobGRBypFHvoUdjvBhwWXVdDjvfJOocyIHbMqZGMaRaaFFnmtvTSkY
  28. nIHbmPAtuEszMDFURBYxcOJXKMvJbfSbhiaacxhxiZBnoHTcFeqXQfjTqpcMKFpvvzkpSxlDxSlhikFZ
  29. XSplcknpxiZfwUwGsrfpBUkevEiwndkKrVpWKufWpLTWXcyyXehOcDfnzgTAkhwOAcaiHqJWzsuAvMyD
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  100. WsMhSGfIcBChcqrRKgKpjvGnFipjswgjetRtniMagakbCXAjpzWTtMlgZGCJwGyglpcLebrKWhgwJfWV
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  104. qKWGc'''



  108. i = 3
  109. length = len(str1)
  110. while i < length - 4 :
  111.     if str1[i].islower() :
  112.         if str1[i + 1].isupper() and str1[i + 2].isupper() and str1[i + 3].isupper():
  113.             if str1[i-4].islower() :
  114.                 if str1[i - 1].isupper() and str1[i - 2].isupper() and str1[i - 3].isupper() :
  115.                     if str1[i+4].islower() :
  116.                         print(str1[i],end = '')
  117.                         i += 1
  118.                     else :
  119.                         i += 1
  120.                 else:
  121.                     i += 1
  122.             else :
  123.                 i += 1
  124.         else :
  125.             i += 1
  126.     else :
  127.         i += 1
复制代码
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zltzlt
发表于 2019-8-8 08:03:11 | 显示全部楼层    本楼为最佳答案   
分开检测就可以了
  1. str1 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
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  104. qKWGc'''



  108. i = 3
  109. length = len(str1)
  110. while i < length - 4 :
  111.     if str1[i].islower() :
  112.         if str1[i + 1].isupper() and str1[i + 2].isupper() and str1[i + 3].isupper():
  113.             if str1[i-4].islower() :
  114.                 if str1[i - 1].isupper() and str1[i - 2].isupper() and str1[i - 3].isupper() :
  115.                     if str1[i+4].islower() :
  116.                         print(str1[i],end = '')
  117.                         i += 1
  118.                     else :
  119.                         i += 1
  120.                 else:
  121.                     i += 1
  122.             else :
  123.                 i += 1
  124.         else :
  125.             i += 1
  126.     else :
  127.         i += 1
复制代码
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geen
发表于 2019-8-8 09:58:17 | 显示全部楼层
本帖最后由 geen 于 2019-8-8 10:11 编辑

这个问题之前有鱼油问过了，戳链接： https://fishc.com.cn/thread-121572-1-1.html


主要是换行符 \n 的问题，
用SHELL检验下，的确也如此：
>>> str1 [/url]= 'AA\nA'
>>> print(str1[0:3].isupper())
True
>>> print(str1[0:2].isupper())
True
>>> len(str1)
4
>>>
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Mmyw
 楼主| 发表于 2019-8-8 11:23:00 | 显示全部楼层
geen 发表于 2019-8-8 09:58
这个问题之前有鱼油问过了，戳链接： https://fishc.com.cn/thread-121572-1-1.html

谢谢！
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zltzlt
发表于 2019-10-6 14:28:19 | 显示全部楼层
@不二如是
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shenshuai
发表于 2019-10-10 04:53:12 | 显示全部楼层
本帖最后由 shenshuai 于 2019-10-10 06:42 编辑
zltzlt 发表于 2019-8-8 08:03
分开检测就可以了


你好版主，我看了这个代码之后有些不理解。
  1. i = 3 #这里为什么要=3？为什么不是从0开始？
  2. length = len(str1)
  3. while i < length - 4 :#这里为什么要length - 4？
  4.     if str1[i].islower() :
  5.         if str1[i + 1].isupper() and str1[i + 2].isupper() and str1[i + 3].isupper():
  6.             if str1[i-4].islower() :
  7.                 if str1[i - 1].isupper() and str1[i - 2].isupper() and str1[i - 3].isupper() :
  8.                     if str1[i+4].islower() : #这里+4又是为什么呀？
  9.                         print(str1[i],end = '')
  10.                         i += 1
  11.                     else :
  12.                         i += 1
  13.                 else:
  14.                     i += 1
  15.             else :
  16.                 i += 1
  17.         else :
  18.             i += 1
  19.     else :
  20.         i += 1
复制代码
小甲鱼最新课程 -> https://ilovefishc.com
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