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

我想建议您下一个选择:

import crypt
n = 10
crypt.crypt("any sring").replace('/', '').replace('.', '').upper()[-n:-1]

妄想模式:

import uuid
import crypt
n = 10
crypt.crypt(str(uuid.uuid4())).replace('/', '').replace('.', '').upper()[-n:-1]

其他回答

使用Numpy的随机choice()函数

import numpy as np
import string        

if __name__ == '__main__':
    length = 16
    a = np.random.choice(list(string.ascii_uppercase + string.digits), length)                
    print(''.join(a))

文档在这里http://docs.scipy.org/doc/numpy-1.10.0/reference/generated/numpy.random.choice.html

>>> import string 
>>> import random

以下逻辑仍然生成6个字符的随机样本

>>> print ''.join(random.sample((string.ascii_uppercase+string.digits),6))
JT7K3Q

无需乘以6

>>> print ''.join(random.sample((string.ascii_uppercase+string.digits)*6,6))

TK82HK

我会这样做:

import random
from string import digits, ascii_uppercase

legals = digits + ascii_uppercase

def rand_string(length, char_set=legals):

    output = ''
    for _ in range(length): output += random.choice(char_set)
    return output

或者只是:

def rand_string(length, char_set=legals):

    return ''.join( random.choice(char_set) for _ in range(length) )

我想建议您下一个选择:

import crypt
n = 10
crypt.crypt("any sring").replace('/', '').replace('.', '').upper()[-n:-1]

妄想模式:

import uuid
import crypt
n = 10
crypt.crypt(str(uuid.uuid4())).replace('/', '').replace('.', '').upper()[-n:-1]

只需使用Python的内置uuid:

如果uuid适合您的用途,请使用内置的uuid包。

单线解决方案:

导入uuid;uuid.uuid4().hhex.upper()[0:6]

深度版本:

例子:

import uuid
uuid.uuid4() #uuid4 => full random uuid
# Outputs something like: UUID('0172fc9a-1dac-4414-b88d-6b9a6feb91ea')

如果您完全需要您的格式(例如,“6U1S75”),可以这样做:

import uuid

def my_random_string(string_length=10):
    """Returns a random string of length string_length."""
    random = str(uuid.uuid4()) # Convert UUID format to a Python string.
    random = random.upper() # Make all characters uppercase.
    random = random.replace("-","") # Remove the UUID '-'.
    return random[0:string_length] # Return the random string.

print(my_random_string(6)) # For example, D9E50C