用python写了一个随机密码生成器

[tianxicool]

看到别人写了一个密码生成器比较简陋，于是自己就给改进了一下。确保包含了数字和大小写字母，而且都是随机出现。小弟正在学习中，欢迎拍砖

import string,random

length=8
seedlower=string.lowercase
seeddigit=string.digits
seedupper=string.uppercase
pwd=pwdd=pwdl=pwdu=''

countl=random.randrange(1,length-1)
countu=random.randrange(1,length-countl)
countd=(length-countl-countu)

#生成随机的字符
for l in random.sample(seedlower,countl):
    pwdl+=l
for u in random.sample(seedupper,countu):
    pwdu+=u
for d in random.sample(seeddigit,countd):
    pwdd+=d

#在随机位置出现随机的字符
seed=pwdl+pwdu+pwdd
shuffler=random.sample(seed,len(seed))
pwd="".join(shuffler)
print pwd

[iambic]

“随机密码”是干什么用的？

[I_NBFA]

好像是随机生成一个长度8包含大小写字母和数字的字符串吧，
其中至少要有一个小写一个大写和一个数字。

[tim_spac]

import random

maybe = '0123456789'\
    'abcdefghijklmnopqrstuvwxyz'\
    'ABCDEFGHIJKLMNOPQRSTUVWXYZ'\
    '~!@#$%^&*()_+'
maybesize = len(maybe)

def rbit(p): return maybe[random.randint(0,maybesize-1)]
def rpwd(l): return ''.join(map(rbit, xrange(l)))

def tester():
    for i in xrange(10):
        print rpwd(8)

if __name__ == '__main__':
    tester()

>pythonw -u "randomPassword.py"
G_)ew1*B
r1uRZJS%
UpGt#2UE
FN@9q9ao
tiMcvbBg
&RF#lbDJ
&9SibvVg
clf6uI^*
Uc85z+$m
q+WE#a!d
>Exit code: 0 Time: 0.456

[tianxicool]

3楼生成的密码好像不能保证每种数字，大小写，特殊字符都出现。
某些有特殊要求的网站，要求各种字符都要出现。

[iambic]

[Quote=引用 2 楼 i_nbfa 的回复:]

好像是随机生成一个长度8包含大小写字母和数字的字符串吧，
其中至少要有一个小写一个大写和一个数字。
[/Quote]
问题是这东西有什么实用性？网站自动注册时生成密码？

[tianxicool]

恩，自动注册网站时为用户分配密码

[tim_spac]

import random

maybe = '0123456789'\
    'abcdefghijklmnopqrstuvwxyz'\
    'ABCDEFGHIJKLMNOPQRSTUVWXYZ'\
    '~!@#$%^&*()_+'

maybesize = len(maybe)
_D, _L, _U, _S = 1, 2, 4, 8
_FULL = _D| _L| _U| _S
_DLU_ = _D| _L| _U

def _rbit(p): return maybe[random.randint(0,maybesize-1)]

def generate(l):
    return ''.join(map(_rbit, xrange(l)))

def chk(pwd, chklogic = _FULL):
    d, l, u, s = 0, 0, 0, 0
    for c in pwd:
        if c in 'abcdefghijklmnopqrstuvwxyz':
            l = _L
        elif c in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
            u = _U
        elif c in '0123456789':
            d = _D
        elif c in '~!@#$%^&*()_+':
            s = _S
    return (l|u|d|s) == chklogic


def groupGenerate(cnt, chklogic = _FULL):
    pwds = []
    while cnt:
        pwd = generate(12)
        if chk(pwd, chklogic):
            pwds.append(pwd)
            cnt -= 1
    print '\n'.join(pwds)

if __name__ == '__main__':
    groupGenerate(cnt = 10)
    print '-'*32
    groupGenerate(cnt = 10, chklogic = _DLU_)

>pythonw -u "randomPassword.py"
02g1$Au(Wbj7
hFIK2hQ*oh1n
Ib4DisSXPQ3)
c4gr5#SFn!DU
Rq~5x8GRl8lJ
hTgh!0h~968W
kY$(QKVar33g
bDlDm8vrXi&t
V_~YkJP~F^2~
KCLmwAY^&13m
--------------------------------
naT8ZCVaVWo7
fu6wAFXYpxVU
pKIJ9WoMrZbp
CN3Wap6clluP
uNVBQRTWik0S
2ThhfnrD3Y0g
zVFQ3SEx1VV5
B4ClxgU59Tqe
DCMasvog3AZN
Tk0FusjuPQ1d
>Exit code: 0 Time: 0.460

[tim_spac]

with doc

# Encoding: GBK

import random

maybe = '0123456789'\
    'abcdefghijklmnopqrstuvwxyz'\
    'ABCDEFGHIJKLMNOPQRSTUVWXYZ'\
    '~!@#$%^&*()_+'

maybesize = len(maybe)
_D, _L, _U, _S = 1, 2, 4, 8
_FULL = _D |_L |_U |_S
_DLU_ = _D |_L |_U

def _rbit(p): 
    ''' 生成一位随机码 '''
    return maybe[random.randint(0,maybesize-1)]

def generate(l):
    ''' 生成指定长度的密码 '''
    return ''.join(map(_rbit, xrange(l)))

def chk(pwd, chklogic = _FULL):
    ''' 按指定的逻辑检查给出的密码 '''
    stat = 0
    for c in pwd:
        if c in 'abcdefghijklmnopqrstuvwxyz':
            stat |= _L
        elif c in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
            stat |= _U
        elif c in '0123456789':
            stat |= _D
        elif c in '~!@#$%^&*()_+':
            stat |= _S
    return stat == chklogic

def groupGenerate(cnt, chklogic = _FULL):
    ''' 生成满足指定的检查逻辑要求的一组密码, cnt:指定个数 '''
    pwds = []
    while cnt:
        pwd = generate(12)
        if chk(pwd, chklogic):
            pwds.append(pwd)
            cnt -= 1
    return pwds


if __name__ == '__main__':
    print '\n'.join(groupGenerate(cnt = 10))
    print '-'*32
    print '\n'.join(groupGenerate(cnt = 10, chklogic = _DLU_))

>pythonw -u "randomPassword.py"
shHa43IQ_2uw
s4aY)U3OV%uW
F2iU%JaDr2WT
O4w$QkzXQCP7
aXXEXT9(%Q5*
$6dSNWj)eQ$3
Z&MDdl+5t_r3
0nU%ic@)gQsZ
pNC2+Dd_3*Q%
aFC%MySdI5qb
--------------------------------
YI14CnavNzdS
5R14Nr7NxDdr
71uuSXxcq3cH
RFmOb8KlRgM8
0vCHw7SaxjYu
WgEVPf9dgtEs
PZ4mA4RMMqzc
XbFduLmnhN6h
d58QsKrM77d4
OjWPhDs6SjYV
>Exit code: 0 Time: 0.561

[samgell]

感觉好像没什么实际作用！

[infofox]

有用~ 只是没到用的时候

[wangyue4]

一般生成验证码之类的随即序列会用到的，写的不错。