在列表中计算有效密码

Question

我有一个列表

passwords = ['baCr',
'/)T.I]DdLNh)^WRIDa_z1',
'izM!Imi',
'NOb5VEhw$[17Q{P',
'i',
'J$52UY$Y',
'T',
'3',
'{77Vt3=2WOCpKWN?',
'$*K',
'[e-mail](i;?',
'zr',
'/}YrhZ7T,X^/}cM0BvR@S)Le$/$Yg@',
'XUGc%',
'+$?D]',
'4?!-G}',
'iMI!G5q]bwI-fE1VT{8rsHWX2tk$29',
'E@',
'lVSh;W9:RyM%Zl9L*;',
'vWYJ%-v?^d:(o',
'.(tp?Hxu{[D+cAhmXGM{ahV3a_fZ!',
'3SXUCASo8/3psxL0p5mw=uf',
'%%7h',
'e(d',
'Ef98S2EUy)mT9MU{@F:zE^8Pb]mg)k',
'k',
'ji[Wtw.#9F$GN%ymi-FU',
'HX?z74lGp]TLqlGp[cRV!w(5]s?7m9',
'5eL',
'Zcrod:Xm',
'}t8bj:RJ4BA6i+x$PlbKL$NNIj',
'H)u(7{lK?Mk!cvUBkzlHXfFyeTL%Sh',
'/]AA-R0A',
'Qq1L$:(s',
'HoDUEPlaKAnDo2;W5}FlY)H(9I',
't0UVz3xgM2Js',
'XJ=@Y=P)z@%7',
'hnDTB7vtCa!MsAIR',
'{R/BvTB?iNS!vKntp$,tvwIC7',
'}2Lz.K',
'P9?+AgbGhp${uMoLqwS(aajG9P.b',
'eldDgR6SZ:v6w^G6ru*vo-',
'-{2{4',
'A=',
'Z{G2p{-#Kz/c}8utFm=WPH_:uTQiT',
'Ql91',
'[e-mail]/}XA0TV4%uRi_k43',
'zcy.Vqfk2xpwgNt-KW?$m',
'X+O+NGT}',
'}]2_',
'Mcuz1;xCE{iHRhsO695ef',
';Q4!nRV7[,LvLDRjke1',
'3BJi9XZW',
'+Rot!',
'nP.kqo1-g2G8ZT$2wxRwI8MAMJ',
'^,$^F7:X=DkDUa?3,L{wf',
'56',
'#O/7CHV4WoMRmq^j$J$/Hk6DUD',
'WkWI5O1J017)5.%!dAaVLhoW',
')$;',
'{5QjA.g:xO#P1',
'M]J%Dxc2]xxc1Kyn7=Ga+sx!@-B9',
':WA',
'2?@',
'HwH_sUUd-i$ln178038#kiQ7T@kZ;',
'13}VI',
'QV+',
'2r-%+=:V',
'DM(DYS),Z==A}',
'fhtmcFtG)CQY0YrB7Aq%0Oogv]g',
'-WFuVnPpZ?z@E{H3I#_:h-v^w9K',
'ceg4g-Y',
'yK8D5*om',
'_ic55w$6N/3/00c',
'^*BhAG4m',
'w#PW',
'D%=^j}l/Qr1l#V*%8d',
'6tJNCnrx,)Fv6*+;q.;PCx1);',
'}Q?}pvhv=beW',
'W$$.C5cI9;Grs653}-5(@p/Nb@8i',
'{(:F6LI',
'r]l@?Fy',
'@N4[qs{!P{Kb[t_sB',
'xoL:UAe(7m$4gjtuakk-ViLNu^b',
'Hc]1:eqc%TzXy8n-?s7VQG.#[nm',
'sM:pqfC',
'8XVO5X7lwt8!B6',
'{$[^',
'7SiL3',
'hV_yN(Kh19%M)5PDV)9oQ5?y*k%2',
'}UhE!SxN7qQVdiNXuw8N+Xxio%I',
'KK:',
'+ZsrD?az!I',
'@_',
'roX:*+2Dl#@k-io',
'7Dq',
'TBQ[5',
'9/CX',
'e74j*J^oD',
'1KRmy=FjO[P?kd#+zNQV9:uL(vP',
'di?hp0L*6VZf9:',
'24?%6GW%',
'S@',
'hI7TS!Jo2J2$Zp/_^aIK^(v{K4+',
'W*zIb',
'Qlu@bPU6UtNd',
'n9yX]z0xBQ3C$BG4Jk/,#MG4j[',
'u',
'xL!b.A!zUn',
'I21%',
'ff1Vf=fWqL:sg$gfKnA7;R',
'!6A#W!jwnB-fPP1hGK]sA!B@uitkj',
'qNf.B35u0),}eL)',
'gXB.8I$bQ',
'9v2q0An',
'F?9HZ4',
'z]bgZ8wHsLJQvT!gh(Yn5o[',
'w)K{[3{Z0%u^q',
'SD',
'#c)RM554mY!YD93',
'09YNkm.@VyMPC8cQg5',
'R1}Jw!-rV=Bo{A9@/aWuuP',
'n/CC5xU3hC.itVaF,R=?[^',
'[RiM[xNb',
'=I',
':M[Z%WY,w0.:{c;69ESv_@4S)#n',
'D6-9s.,f=pXiuMF;!l}!N]',
'L?2',
'=#l4,5',
'ZAdAEkQzdmc[O[A,H%9]3}i?',
'0%,OVJ9/}([L[Nq=3mgS:sYHa;',
'Y4:*NU',
'$To.Ce7:hd#YgKFZr+1i.Lx)BIuH',
'nM)@%*H9GiXevMmVm.(Z)]:!BxU!r',
'h?(Y_',
'F(qqHrvx5kL[Xx=4lcs:H!A',
'TgIT+I;GClgST/NB*',
'6=}.',
'+4',
'+BQ5C}:6',
'Dh5VF2Ek#a',
'REB4k%v.c1J*vq?F3#2',
'8}JCK',
'#{?2[X?M[A!_O]RVKqVv%93_@]vx,$',
'H44z_DwaG/A,g)xBCG+9GjAh7e]$!',
'jgct7fezi;jtqc*',
'(_',
'.3:',
'eM4mx)S9HDq_,*rZ;LE0S=U4L2i',
'-]F]']    

和我需要找到满足以下所有条件的密码:

• 不能包含超过15个字符
• 不能包含小写字母(a-z)
• 第一个和最后一个字符不能相同

这是我的代码:

valid=0
for password in passwords:
if len(password)<=15 and password.upper() and password[0]!=password[-1]: valid+=1

我相信答案是38，但我一直得到85?有人看到一个错误在我的代码，将返回错误的答案?谢谢。

Answer 1

password.upper()返回大写密码。您需要检查它们是否与password.upper() == password相同:

valid = 0
for password in passwords:
if len(password) <= 15 and password.upper() == password and password[0] != password[-1]:
valid += 1

>>> valid
38

---

你可以看到这里发生了什么:

>>> x = "abc"
# Check the truthiness of x (this is what you were originally doing)
# A non-empty string is always True
>>> bool(x)
True
# x.upper() will just return an uppercase copy
>>> x.upper()
'ABC'
# You need to compare the original with the upper
>>> bool(x == x.upper())
False

Answer 2

您可以使用正则表达式检查是否没有小写字符(a-z):

import re
passwords = [
'baCr', 
'/)T.I]DdLNh)^WRIDa_z1',
'izM!Imi', 
'NOb5VEhw$[17Q{P', 
'i',
...
]
valid = 0
for password in passwords:
if len(password) <= 15 and not re.search('[a-z]', password) and password[0] != password[-1]:
valid += 1
print(f'{valid = }')

输出:

valid = 38

Answer 3

另一个版本:

import re
valid, pat = 0, re.compile(r"([^a-z])[^a-z]{,13}[^1a-z]$")
for p in passwords:
valid += bool(pat.match(p))
print(valid)

打印:

38