Re: create random string for username

The Django tutorial is not quite making it for me.  This is a very complicated language and all the pieces seem to not match up for me.  This I think is my fault and most of it seems to be in the use of the r hat for root and exactly how that points to views, models and dbs.  I may get there but it is not easy without someone to be a sort of guide.  Each time though I go into settings or one of the other files they get a perception of being more familiar and thus shorter.  While doing some of those I say a key set to fals for allow profanity but not sure what all that filter has passed through it.

On Sat, Jul 20, 2013 at 8:20 AM, Tim Chase <django.users@tim.thechases.com> wrote:

On 2013-07-18 20:53, Sivaram R wrote:
>   While saving these forms instance,is it possible to create a
> random string for username field.How to do this,any sample would be
> great choice.

You can.  Assigning random usernames isn't usually considered a very
nice thing to do to users, but assuming you have a valid use-case
for it, it's just simple Python:

  import random
  import string
  def random_username(characters=string.ascii_lowercase, length=10):
    return ''.join(
      random.choice(characters)
      for _ in range(length)
      )

You might also want to post-process to check for profanity in it, as
you you don't (usually) want to assign profanity as a username:

  BAD_WORDS = [ ... ] # all in uppercase
  while True:
    username = random_username()
    normalized_username = random_username.upper()
    for word in BAD_WORDS:
      if word in normalized_username:
        break
    else: # note this is at the indentation level of the "for", not "if"
      break
  print "Username:", username

It's not a perfect check, but it will eliminate the obviously
problematic ones based on your black-list

-tkc


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