关于一段程序的问题,Python交流,技术交流,鱼C论坛

Jerry~Mouse 发表于 2022-3-12 23:58:32

关于一段程序的问题

题目的要求是每个找出str1中的小写字母且这个小写字母左右两边均有且仅有3个大写字母
我的程序是这样的

def count(x):
list1 = []
str2 = ''
lenth = len(x)
for i in range(lenth - 3):
   if x.islower() == True:                                                                               #这里找出str1中的小写字母
         if (x[(i - 3):i].isupper() == True) and (x[(i + 1):(i + 4)].isupper == True):    #这里试图筛选出两边有3个大写字母的小写字母（似乎？问题出在了这里？）
            if x.isupper() == False and x.isupper() == False:                   #这里剔除掉不仅仅只有3个大写字母的情况
               list1.append(x)
               continue

return list1
print(count(str1))

我百思不得其解为什么我最后的list1是一个空列表

下面是str1
"""ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
lqNsYCyaQXBzrFUbkAUAWAKrDgDtAlGMBqWQhpEwquZqWZJpslUfMllCwWptqINjrOBTLuPzwvXNbLCx
oFRritKRpJgBOaGPZdkUzvYnvYmAlEsVmKRXqyQUOdCBqLYyboOYeAQNLnkuiDXCiNiksSSRpDMVQQgs
TmYThnppfKSmkpjjceGLaMOvYgsvNkGENKgGtUSzVPlLMeephDKrWGNpAxBqRiCnQIuKwDZurIRsznUp
xhstMWpHdZzqeEnttlAHiWbhbIJpwKBAGsFWthBiwBDKTFzIUamELZJFLbmqOmwBIYBJIofAUyxTLUEm
LcOXzjIHFcfUfEWccbWzhVuIZMdTVsOaNsLTpHjrvFaYTnJUrqaYnUmbobfOXXtkjKjFUEhVNlPWeaIY
uABNuEDKFWiUaqQiBHGsgEmDSKiJKLkkzFWlobXIyUlDzGcwDnEOwwWxgFpebsslmKItazIYctPROSJp
ImDHusQIkoFQSmuqwdcPNERvflfHtkGTrtbQXqZUsazoxmbVTPIuuxKvfALAaGnIuIZwczCcoIRMncBs
timFGHPJPaHMPTLjsBjIwbbzKyghaDTUStzJceaYAneywwpvdiUJifPHtXmAwZPChWsDmwonzeeQCEiB
xWsJLAtrdVEOBxEaYiSabHdUwlXlDOAKzZUwozJoBGvnFttDkXdYdjQSzzhTIPfYpWVFdiFIqSbyPZIi
VoXunBPbAJVMWluPcIfHmjPeHaTyClCvTOucEYEZXbVDiZMsfeuruDGMmQEsHutzvzVmWvCoPRguBiHh
taTeaguPmNuAxzYJLEcdoApfIFBaLUqettjTJNlHZYlJZRRoKXEvFnoUHdPjDuXuTAubGODkHAokpItw
SlEwhjrUSlfMawWlTMciWAzVcgPcqCHIaogokYAWGsvWZzBfJqzxIkCNvHDvBkOMCyeYXzVVuRJLQIOy
BMoVPgFLOagDxyPfWxTtZQNCLOrVVclPzMNYruNUyMOBKxBvinxuGMAAfndhPsROtkOJAAJQSxpmTzXm
CmEwZOhlItvETUneqvdKLghLyREjuJWRFjVVuNMiPuvvmRaEUmjCXDVuMRAvBuHUYGKPXthWISIbueRp
uvxpmqclmrXpAGFrxhJGxQwlrbkHEmcEUooCoPqGzbrCfIWmtUKmzzXvcqbhxKcAwXCNjbJDWDndKiLK
HwaFKyhXJQgHjIaTfIJrkhUpTHJZebRertDigQtDKxGerMRgHWFTrqqZlcBjAUfTZdFlZCAEZnhzgTIy
gJSsWJjFcCVoFonAfKPTOhTxjxTRtzSKLoIOScEwBCDvWFDVGpBOpijqdwvugoYsyuIOZJTcySDrzy
wBxediHOIYgasrUIDsNZcParqTGfTaBZHoSssXGtiCVvLReyoiitzMpsouqUeMHGWwDMgBaQTRkxPwNP
XsvyFVXfjgKuamMTsEsbeKDgAdVndyDleenPBcXWKGPcDsALDajkCEGufvbtyXUZnelqISbQnHphDoTH
RMIxMKclpWSvQHkzRhdAehBVaKYaXRPMpGaeRxvTRVFfewirvIDoGvYTAvKSoMFCLUNVFVKrYMeYtBrS
KgiBOjvliNOHLrmztypGhQjtpEQwzVfpVqsTUPvOCPzgqOuvLXJBQZHLmSwGTxEMgCAbogXombCiBDNX
BvGtXjrGWbWHtNCoRuqIZPhBQXZiNUhbmzOiyByAoMSBvusppiPVibIqmLXwXEVfcEAyNeUxaEZThULu
mkGmoLrpOEktwRluXvOmmfEWxZkxUNIqZKuzbaUmLKBYrXMmdOYLEzljzbSJnqRbSiAFyUNyyieKITkh
mvkKyosXKCaTsXQIKczJmxuqIEKeGGGwZyWTolQynlWngjDzFMlwhJFEmODeycbEfxgSRbIXySfwlhZZ
BUBhKyGBHRzWGRXAzarcmSDORvaOMOqYlcVIMwlHGtrLMhFWioqeKfvsJdTXmfQzavzSzCRrVzLFMaBT
DMOPFJcjzXcPvBkzacRmVKTQAvVobGRBypFHvoUdjvBhwWXVdDjvfJOocyIHbMqZGMaRaaFFnmtvTSkY
nIHbmPAtuEszMDFURBYxcOJXKMvJbfSbhiaacxhxiZBnoHTcFeqXQfjTqpcMKFpvvzkpSxlDxSlhikFZ
XSplcknpxiZfwUwGsrfpBUkevEiwndkKrVpWKufWpLTWXcyyXehOcDfnzgTAkhwOAcaiHqJWzsuAvMyD
pDJgeCdAJMwatRfcpKQGTkwxHracsYOlZeXoGthHIRfDBYzhuGEQRKFRnqSEbWDCJObWSAoSwFzVZEnI
rVBwXibUaTwnSTwRmIwkIgoGPRiOMLOTvnzEBBCfcugYZwGSsHRKCJoRsxxzRkKwnTRcRNfbMGssqmXV
IKYzyWHIsCjdzxiHEtvHaufVgcoqVkqIQertevTUTIVMYlNXCGEUzQowqsFpciURKoUwqCRogxeghOWs
cMnuAathgFvNIVqqXpmdJDJPhXQpZCyNbTYktMyTUtQEBeQBhEZzqHotmYREADhFodlcPmTMutBZyefW
sBmsnUbVnHUGAyaDirMoowBwXnzrmfHJgfpAquFoHTuvQvIJcjqiqVdntXbgwpVywbsKxqUMNxYVxBmQ
OAcxOAVPuJeOgABYEHhevhnUOgCUuTBAhJcUGsasbMInGCbHnHXWDdXijDRkUYFuOytTcMPtWklmTHTR
XFTfcFfSSqFUFbQVCKEjUOLveXtsHrIfkphXyDkRELnaTfuaZUClLqbdpWAREJHJpycYRDjElqlVeNya
kTCjDpvFrdnlXogrDZdQzAYaePDdfvHWdcaQGgrrHKBdMnMYbsikbkffVsITSUhEapmLGQYbHoiKGRcg
GPLeEvmCOAkGIuDBdnYPlzuUmLOfetGXpbTbPjjWCZiOJxlDazSbEPVpnNLDsLiwlgleiCdPezQwnNWT
ECLuRGpfJZlnZtcghLucmvlOZNwXaikbKGmoGZJIcsfNnmaHIcPXiEYDHjLKpVtNsqemAmaiTIzvLqlU
mlcvraikZozZwBoExUkELoiaAbTAkqDhrARHQyAvWvYUjthfWjZqbQNTnkgmySsORxGcxouYcyCSkjmC
fpTGOlFoXWLINurMZdQURRnZCiZqsEKeVVZdFMnaoUepdAdARtUuXTvkGzmpEVNZiYSWJAwkcSKgAWTD
mUNVxVebIiavuOAxWUBkuUkXCYtRoZhVNwCZGlaANNpBvXgSDeLURUdQnQteKAXbGlOLGYYYCzCGjzua
UmrdPYuRrUBvLFfwBGTiABTmpANdPCptqKwWXARMKrtmbggOBDgNkeHzNUCIXUIuOAavRbLTnzNNRgzL
boTJooLJIdVFbbjWNngnzPznJglCLEWqulqzSuAyvqYdivDqxEtYPKTwVheFmDidEOnLqjPHBcjoOVvt
MCDmQfwNxkOPuxiJqLQOPRAGJappmpikgmrvRAlKjFjTlaznQldBJmzSMDvCWghWOgfhfkHFZBNdbmMf
MsaQHrtJQvZuGFCrPVBNSNZBFZRdpmQNZYZXpkGjXRAXhELlxDfGhiXwgAUujQbqUCiKaRIYruNDRDlL
zInUkJBpySRZoqwQlqmoxADBjjtGjFPLTkcexYGwGYlANZQaXNgKkPXUUqlViVzxPxxtMQPqOxTcChCg
dvKNliVwzRfMmSsBFeuePnbmVqvyfdOXnZpUopEqfCMnnXpfZnNYwNKiZFPUWWmNCMibsyQEhiodVjTz
UxsicVsZNMXyvBLrdJxGGeCPEutNCzYBRamXwRlmVdqUTPnUoAWaVDshgTHZhvhVlLZsoqbyqOjJMPac
hHqiCKhgFkDUhUDSwsrEwaBrKhXINTjYmHvsTyFdRHliydbfQtRFZcsSTfcSfqyIgQuXLZnrdAwylBmW
BRbmVwdoNFcnoxMKHaYOhgihIsKitcrgEkfjIOKsDPOadFhMwVSKWeCfxxxfWjgNiGDaiYDtMhCgedOR
nTYoeVrpGsyDIsuKhffqaEqoqfWukaQlcUShYicuZAdoYVGvRchUgcmNwxQGogDvKhyAkIuqHCIXQfXp
CtkSSTXTugolUKfqSzugIOpyHhIlcTjDBTKPqcyaRhmgFdSBkYurnvnukNGVoxpZBFmwIEmehuaUcoeu
btkjJqKcAAqxgrKcoRGuqHVUHqKgEaqRCIXlaTqaUewJBEWnTnTJIDYdLeGUMDfndHPYTAGQbhxreADo
WZtdvbJVnNGRNvlAsqIPlpXSXEZGBdqVyNCCwylcXprVoGqnPXZioKnqbdrYlDhbsTVDJqRQKoPtQXzu
RnrGgCfYfeRRxiihjItxHurPwtYJoObDzlEABeIRxQocvWrJtyWchmZXJdYvTgicUircdiMKYAkNbdKu
gPpzXnTQIZxtIhvfBfjIHRaDXbYExxYBvrejpEaVHlinHlYRrhsbChnAwTKlQtHntqcqiXZwTUEdlsVy
WFdZNRfqzkhWzeKMGmkuKoSkuSZRkddsuBNFVMFLPeUkLwCCDKagNjMZwtHcVcEEKyjAYubHipuqNjaV
JukystpMZrhBgLqRVMpaIPsyAvYIsBDVqKNCMLqLwyhJhuWDdCPBgSzJTLkJvaGPirOFwfuMtkyXeKoZ
rGPRJqXyhdYNOXVSqGvbSPozAbjhpyfgGVuNUYaRQomzrTtzAMJnYnyvDnuBkbVvmYzhlhqmwgCZaGJG
GGRbaFdfnDlUfCfhpDWTkWfpUDuUksJvRFNxVYBKGoxBCdhmYZwyDPzWihcQXgByRbYxWZslVsbuTHTf
vaulICCTRkkiYuYoqFdzuxsqOBkzEJHbNXhSnHYxyeGoEklCeaUVEtjxmXyOEzcpsAhfKCTejxOxwGYh
eLtoPpPINviTCHUsgzSkycIxtvekMaoZkBIyLboyvMxxaqfviBxkSALNjiNYqGTypcZDvHonaVBZCSLp
SjRTsJmDuPwKnYwCdTprFvbXnrhARNToXpryIfEoIwSWIdfSKeOHDYwgyUvwXXpKUKQEiyZxCsTkAjME
hdxShAAUYJTkprXuFITxxJuKMiphRAyAeUFZgknMMLvUaSjiMlGmLARvTMpllxEQyfvEqkcONHVFcaTW
tqcbVrgeTLTGuJsrjZdYrrjtoLKcEfjkIhjzXgEkYhZggujFJuQlVtSqvuejtxAEqjgXrYjmwLkSRmXp
pkTfONxRyAxRYqJccLxuhabwMTWfwLTlzuVGJtVJOXxwKjFIZENpGHwRvTRitDBQBesRYATKhmWmmmbP
EXOzdBHNeghlqpjJFmzXyADNHQNEThWDyMsGsTmyFnywIPvDSIcxHbKQHgmJEcfsPzYvSYIbQjnTAgzF
UfZAbwfgCMRxtmZQQyayJFFhCSVeeUcQzSLWqhENNUpyLZaJsQsFQsPyFIjGtcmoJaFQGKTFtKUBdBBo
xECKHgYSMcBWnzRvPyihfjwyjhTTavfYqOrbrgZDSrwVYFjNsdxLJIigfMgythUoUIVSydOnfhAaesXZ
kfyDztQiBCMHjfEGLFllxfejLJjanZVRENsXhIxSWDgbvHHOAFtHzqdfquGbdQvOFlhDiWpxwEolxbep
fVfpKYGMNIQuOlmtTkNRDFTVMtVkEXYUDZKfEihbxXsSLGDcKSHSMXZxAturZVEQgismVAgMVVatqjBM
rXeHaGdccPJMlqhVAePDyEoIRTLCwJpkNTuOjEKEvXaAGhWmhWPHCBMVPkcPklbGIvzMzOFplRUsvZbE
vScmmoKktOUVOeKBcqVvoSsplqqssDvLiPqucbrxoNkodsbrZnvoDfyNGyUAURseEuJPUWsEiVCNcUNd
sxzoRVpEFuFloqWLumNVJITKXnWnOlGpCaQgTLJYizixXoxAHHbodRtPHBbnSzZRZOmlWKOQqvHWAhDh
cYBGRQsFwyesMILhiwjnvjeMIZnHYHYNrmOahjrVPuRgsxdfgUbKCZAVfcOizDeQLKiFQmQQUlDHnCQe
lMnlLSrtXhmGDqISCgElUrZXbXjGGkdWadBbxzVojGQwyhAbWMhSKFFwoIqJfIDdZjUdfCYFkpDdIuWe
aFIUFhnlsREthBRoaquSzBVVOPABfuAYZpoalZwNfZMPOptcoQYVUdRYlXuYChPAdRJgFgwPyTszSXIe
qHRtMxyNlPGoBfpjxHnNvwIADmJmquLgMQGtpJAyvflZjFwAgIymerCTnVkjvqPKFVRscOqAhqvCqCjw
BBojzXKIdphOVTFKhBpnIWYRfuqvQZgVMaqNBkYKzqGaEnBFKZukSLdPbXNmcZtMeykLwlLbZqaHayOb
IWZvbxEXXnaozCHeyiYMnWqIAwJxhMIPDsgySMKhdBYmdrGdbJOfJralshwvhWlmatTsylewdimJEzph
tuTzSGOkGDPPvltRVJPdHRPBTAsKWncfjjuHdlEVOeZIvVnUFHmyGTFDlMGVyAIdzLocbTXIHYTopIok
UHFAVjEXPlsMoKTriyGnfeTlVzvGhVZzUAWWPdZNdIxKioQylFMJZmSToyRGsDJKJXQxPkINvmoHCVUc
RIjImkWWxTnDLQiXdmHqQrWBuvguUUubGByTRnJfkNWxsSupcfIVgboDWzqYHEfAnIKCfdYUOslfXPax
YnaJfNLqJgcxRjBmRpOYgNpZOpzMOCVIRiiXdIqqFxPJhQqJadKiCesOsZoWGWbbQSVRZUlbNZdzeUTE
nhdMSCKCPbpWZguZHGkLiWCisjqnaLbJpbRFAHPjGbHOXKZQXoQQZohmVqjTcdWNhXEjPlLKnjpwbMPQ
ybzDvGgkybXtbDmjQuyOrMrcYGRGGfuuPXzieaetSBidnSRPsLaXKGcxDkXmHbqMWZJXsQkwtojlxOeU
KSIFdVvNEnOUmIZDdlnwtJcPBlcpRWNTazpzgItwJotSLWZruzrMlSGASMWDwOqTpeYYHaTHCCurPdwB
AWzUtwblZXNrBYdjUoDacvmRVURqOzUPlnFISsZMFPtthnDHSsFgkYfsMtXFuNPhLTleWVrmelyFaemo
bVIhEAxNwOUDQCOCDIBHsQlFxCbHErKiBsvQNjuIGnIzZiwoVTdUZnucSaKdHrxJeGQfTawFJefGJFFa
GHzELfnGBmkZyorbbDDwhvEVeIYIGLPMEuZduqFjbeWbVfzVIRZNXwPLgcYUsevuhEQXfYcJshYnJaWz
iqvlswEBRKNYEJidlzdWnQJpBtyjHYVpkQGzdYkeREqjhmmnUIbGZVnwwaMKqgXfURSICNxdteUSGhGZ
UEEFhWRoTKGRwFmPpZPOsalsrNOlkTdXqGKoWlWkqJvYYrtLiTfhdItMbbhdumSYgCcQVUARnYFWkCsC
jElZxrQHIlbTHFLOnrutlvyxzaSIdkJgeyMUnUmtXfnaIedbAInAuQssOQqBTLbvFRiqKqUSdUEmcRmN
LvAxlgliymfbjTwDSqNTLcAEIerzpUShNKkuehciEAYeGJOFFcOvurJFUyfZhQqzfaneiBcrPhaphSCB
StQiJvtoPhHcLUbriDUIfifVFnNtJfGlmcbQJSXsZfVjpbqnkMllUmHzLvEuSarSlNlNHsWvYlfhjMEA
epYTjoRGZeAAtURFeDfDxTYmOmONuQQBdcdncFGjhHmKlwqmUWoXuIXIxaaXnNThgPGtIlynrUIPLQTG
xXhattDrfBGbZRveKbgjzxJLdYREQlMeLtcIEUoyJocdAfUbymxuFLVjGkOQniiPParqoyQYfDYAQTkM
WLicLxpEFkBbwlKrTyYilKTtYkpVGxtOjYmcBDOrwFhFiGutmpTyTarUbVUeSevBTdaPDpjRkaEmLJMg
WsMhSGfIcBChcqrRKgKpjvGnFipjswgjetRtniMagakbCXAjpzWTtMlgZGCJwGyglpcLebrKWhgwJfWV
qGifWNEpCtjuejHoyVCdIxzMYGnfoslgTNAJdtVBWDVoGLzHSAVBTnhNIvAOExQNiJOIPPiHkdaRbfaP
ixDDoCDOOeAqvQJFxLWDICfGmufyxmaMshbvcrtjqqVtffZTnbtCOQfzRMGwOQEKaAmSWjnYdNgvdkmd
dQmaKZSdqKNrnvJlcyVMKuNWmuoOeyKecgjXbmSqnpjwJEaDYoehEklEgJyiksGxdEKgfYRXQecRZgfe
qKWGc"""

isdkz 发表于 2022-3-13 07:38:19

本帖最后由 isdkz 于 2022-3-13 08:12 编辑

def count(x):
list1 = []
str2 = ''                         # 这个 str2 至始至终就没有用到，可以不要
lenth = len(x)
for i in range(lenth - 3): # 这里不能从 0 开始，因为 0 - 3 就为负数了，也不能到 lenth - 3 结束，range时左闭右开的，所以应该是到 length-2 结束
   if x.islower() == True: # 这个 if 就没有被满足过，因为你用 x（x 是传进来的整段字符串）来调用 islower 方法，只要 x 不全为小写，islower() 就不会为True，这是导致你的列表为空的根本原因
         if (x[(i - 3):i].isupper() == True) and (x[(i + 1):(i + 4)].isupper == True):    # 这里的最后一个 isupper 少了括号
            if x.isupper() == False and x.isupper() == False:
               list1.append(x)                                                          # 这里应该时 append(x)，x 是传进来的整段字符串
               continue    # 这里本就在循环体的最后面，这个 continue 有点多余

return list1
print(count(str1))

故对你的代码修改如下：
def count(x):
list1 = []
# str2 = ''                                  # 改了这里
lenth = len(x)
for i in range(3, lenth - 2):                # 改了这里
   if x.islower() == True:                # 改了这里
         if i - 3 == 0 and x.isupper() == False and (x[(i + 1):(i + 4)].isupper() == True): #注意这里，因为 i 字符有可能左边就三个字符或者右边就三个字符，比如字符串的第四个字符 i，左边就三个字符，如果减4 的话就是倒数第一个字符了
               list1.append(x)
         elif i + 4 == lenth and x.isupper() == False and (x[(i - 3):i].isupper() == True):    # 注意这里
            list1.append(x)
         elif (x[(i - 3):i].isupper() == True) and (x[(i + 1):(i + 4)].isupper() == True):       # 改了这里
            if x.isupper() == False and x.isupper() == False:
               list1.append(x)          # 改了这里

return list1
print(count(str1))

Jerry~Mouse 发表于 2022-3-13 13:04:50

isdkz 发表于 2022-3-13 07:38
def count(x):
list1 = []
str2 = '' # 这个 str2 至始至终就没有用 ...

emmmmmmmmm大致看懂了但是改了程序之后打印出来的字符串还是与答案有差距多了几个字母答案应该是i love fishc 请问为啥会多出几个字母呢

isdkz 发表于 2022-3-13 13:17:55

本帖最后由 isdkz 于 2022-3-13 13:20 编辑

Jerry~Mouse 发表于 2022-3-13 13:04
emmmmmmmmm大致看懂了但是改了程序之后打印出来的字符串还是与答案有差距多了几个字母答案应该是i lo ...

因为小甲鱼的字符串跟你的不一样，你的粘贴上来的是带换行的，

>>> 'AB\n'.isupper() # 可以看到带着换行符也是会被判断为 True 的，你的字符串虽然没有 \n，但是三引号就是会把你换行的地方自动转为换行符 \n
True
>>>

小甲鱼的没有换行，是连着的。

你的字符串用 replace 方法把换行去掉就跟小甲鱼的一样了，

replace用法：
str1.replace('\n', '') # 替换掉字符串中的换行符为空字符，即去掉换行符

Jerry~Mouse 发表于 2022-3-13 13:40:43

isdkz 发表于 2022-3-13 13:17
因为小甲鱼的字符串跟你的不一样，你的粘贴上来的是带换行的，

这是不是也就意味着有两个大写字母的换行处也会被判定为True，如果用replace的话，可以替换掉潜在的换行符，可以这么理解吗，只有三引号有潜在换行符吗

isdkz 发表于 2022-3-13 13:51:47

本帖最后由 isdkz 于 2022-3-13 13:57 编辑

Jerry~Mouse 发表于 2022-3-13 13:40
这是不是也就意味着有两个大写字母的换行处也会被判定为True，如果用replace的话，可以替换掉潜在的换行 ...

嗯嗯，对的

Jerry~Mouse 发表于 2022-3-13 13:58:13

isdkz 发表于 2022-3-13 13:51
嗯嗯，对的

明白了谢谢谢谢

benyazi 发表于 2022-3-13 14:22:31

lenth = len(str1)
a=list(str1)
print(a)
for i in range(lenth-3):
if a.islower()==True :
if (a.isupper() == True)and(a.isupper() == True)and(a.isupper() == True)and(a.isupper() == True)and(a.isupper() == True)and(a.isupper() == True):
print(a+a+a+a+a+a+a)

测试成功

页: [1]

鱼C论坛's Archiver

关于一段程序的问题