CODEWITHSUNDEEP
pythonregex
user1506361
user1506361

Reputation: 35

python random.sample("abc",3) . how to use regular expressions in place of "abc"

I am trying to generate random number in python using random.sample . This is how I am writing code . 

import random
r = "".join(random.sample("abcdefghijklmnopqrstuvwxyz", 10))

Above code generates random numbers of length 10 whose letters are populated from the letters a-z. How can i use regular expressions over there like [a-z]?

Upvotes: 2

Views: 251

Answers (2)

PaulMcG
PaulMcG

Reputation: 63747

If you have the pyparsing module handy, you can use the srange method to expand a regex character set to a string of characters:

>>> from pyparsing import srange
>>> srange('[a-z]')
u'abcdefghijklmnopqrstuvwxyz'
>>> srange('[a-z0-9]')
u'abcdefghijklmnopqrstuvwxyz0123456789'

Upvotes: 1

jamylak
jamylak

Reputation: 133634

Just use this instead

>>> from string import ascii_lowercase, ascii_uppercase
>>> ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
>>> ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

If you want to generate digits you can use range

>>> map(str, range(10))
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']

Upvotes: 4

Related Questions