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Generate real random string

Author:
rafaelsdm
Posted:
June 7, 2012
Language:
Python
Version:
Not specified
Score:
0 (after 0 ratings)

Use this snippet to generate cryptografic-ready random strings

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# This snippet uses os.urandom, so it's pretty well random

import os
import string

def generate_random_string(length, stringset=string.ascii_letters+string.digits+string.punctuation):
    '''
    Returns a string with `length` characters chosen from `stringset`
    >>> len(generate_random_string(20) == 20 
    '''
    return ''.join([stringset[i%len(stringset)] \
        for i in [ord(x) for x in os.urandom(length)]])

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