How to make a list of random ASCII letters and digits?

Question

I would like to generate a list of random numbers and letters.

I managed to make this:

def rand_num():
  
    while True:
        random_char= random.choice(string.ascii_letters+string.digits)
    
        random_lst= [random_char]

but when I want to print this random_lst I get an output like this:

['W']
['i']
['P']
['6']
['P']
['B']
['d']
['f']
['n']
['j']

instead of:

['W','i','P'.... and so on

What should I do? Is .choice the wrong function in this case?

score 5 · Answer 1 · answered Dec 15 '12 at 20:35

5

Try this for a list of length 10:

random_list = [random.choice(string.ascii_letters+string.digits) for n in xrange(10)]

Or this for a string of length 10:

random_string = ''.join(random.choice(string.ascii_letters+string.digits) for n in xrange(10))

answered Dec 15 '12 at 20:35

John Kugelman

score 4 · Answer 2 · answered Dec 15 '12 at 20:33

4

You should have this instead:

random_lst.append(random_char)

answered Dec 15 '12 at 20:33

squiguy

silly me :[ I did try that but I forgot to put an empty list outside the while :D. – user1509923 Dec 15 '12 at 20:36
@user1509923 Oops! The other answer is cool too because it uses a list comprehension. Check it out. – squiguy Dec 15 '12 at 20:41

2 Answers2