如何生成大小为N的字符串,由数字和大写英文字母组成,例如:
6个754z4英国U911K4型
如何生成大小为N的字符串,由数字和大写英文字母组成,例如:
6个754z4英国U911K4型
当前回答
这是对Anurak Uniyal的回应的一种理解,也是我自己在研究的东西。
import random
import string
oneFile = open('Numbers.txt', 'w')
userInput = 0
key_count = 0
value_count = 0
chars = string.ascii_uppercase + string.digits + string.punctuation
for userInput in range(int(input('How many 12 digit keys do you want?'))):
while key_count <= userInput:
key_count += 1
number = random.randint(1, 999)
key = number
text = str(key) + ": " + str(''.join(random.sample(chars*6, 12)))
oneFile.write(text + "\n")
oneFile.close()
其他回答
现在可以在这里使用一个新的库(python>=3.6)
from chancepy import Chance
random_string = Chance.string(length=10, pool="someLettersAndNumbers123")
import uuid
lowercase_str = uuid.uuid4().hex
lowercase_str是一个随机值,如“cea8b32e0934aae8c005a35d85a5c0”
uppercase_str = lowercase_str.upper()
上机匣_str为“CEA8B32E00934AAEA8C005A35D85A5C0”
我已经看过了几乎所有的答案,但没有一个看起来更容易。我建议您尝试密码库,它通常用于创建随机密码。
您可以生成任意长度、标点符号、数字、字母和大小写的字符串。
这是您案例的代码:
from passgen import passgen
string_length = int(input())
random_string = passgen(length=string_length, punctuation=False, digits=True, letters=True, case='upper')
import string
from random import *
characters = string.ascii_letters + string.punctuation + string.digits
password = "".join(choice(characters) for x in range(randint(8, 16)))
print password
对于那些喜欢功能python的人:
from itertools import imap, starmap, islice, repeat
from functools import partial
from string import letters, digits, join
from random import choice
join_chars = partial(join, sep='')
identity = lambda o: o
def irand_seqs(symbols=join_chars((letters, digits)), length=6, join=join_chars, select=choice, breakup=islice):
""" Generates an indefinite sequence of joined random symbols each of a specific length
:param symbols: symbols to select,
[defaults to string.letters + string.digits, digits 0 - 9, lower and upper case English letters.]
:param length: the length of each sequence,
[defaults to 6]
:param join: method used to join selected symbol,
[defaults to ''.join generating a string.]
:param select: method used to select a random element from the giving population.
[defaults to random.choice, which selects a single element randomly]
:return: indefinite iterator generating random sequences of giving [:param length]
>>> from tools import irand_seqs
>>> strings = irand_seqs()
>>> a = next(strings)
>>> assert isinstance(a, (str, unicode))
>>> assert len(a) == 6
>>> assert next(strings) != next(strings)
"""
return imap(join, starmap(breakup, repeat((imap(select, repeat(symbols)), None, length))))
它生成一个不定[无限]迭代器,由连接的随机序列组成,首先从给定的池中生成一个随机选择的符号的不定序列,然后将该序列分解为长度部分,然后进行连接,它应该与支持getitem的任何序列一起工作,默认情况下,它只生成一个字母数字字母的随机序列,尽管您可以轻松修改以生成其他内容:
例如生成数字的随机元组:
>>> irand_tuples = irand_seqs(xrange(10), join=tuple)
>>> next(irand_tuples)
(0, 5, 5, 7, 2, 8)
>>> next(irand_tuples)
(3, 2, 2, 0, 3, 1)
如果您不想使用next for generation,您可以简单地将其设置为可调用:
>>> irand_tuples = irand_seqs(xrange(10), join=tuple)
>>> make_rand_tuples = partial(next, irand_tuples)
>>> make_rand_tuples()
(1, 6, 2, 8, 1, 9)
如果您想动态生成序列,只需将join设置为identity即可。
>>> irand_tuples = irand_seqs(xrange(10), join=identity)
>>> selections = next(irand_tuples)
>>> next(selections)
8
>>> list(selections)
[6, 3, 8, 2, 2]
正如其他人所提到的,如果您需要更多的安全性,请设置相应的选择功能:
>>> from random import SystemRandom
>>> rand_strs = irand_seqs(select=SystemRandom().choice)
'QsaDxQ'
默认选择器是choice,它可以为每个块多次选择相同的符号,如果相反,您希望为每个块最多选择一次相同的成员,则有一种可能的用法:
>>> from random import sample
>>> irand_samples = irand_seqs(xrange(10), length=1, join=next, select=lambda pool: sample(pool, 6))
>>> next(irand_samples)
[0, 9, 2, 3, 1, 6]
我们使用sample作为选择器,进行完整的选择,因此块的长度实际上是1,为了加入,我们只需调用next,它获取下一个完全生成的块,当然这个示例看起来有点麻烦,而且它。。。