Yes it needs to be short. This will be an invitation string most likely written on a chalk board for kids.
Also there was an error in my initial post : I forgot to increment size += 1 inside the while loop. Noticed right after posting. thanks On Monday, September 10, 2012 1:27:37 AM UTC+2, george wrote: > > Do you need this identifier to be so short? If that's not a problem, why > don't you use something tried and that's proven that will succeed: GUIDS > (or UUIDs). > > http://en.wikipedia.org/wiki/Globally_unique_identifier > > http://docs.python.org/library/uuid.html > > On Sun, Sep 9, 2012 at 8:10 PM, Anton Popovine > <anton.p...@gmail.com<javascript:> > > wrote: > >> Hi everyone! First time posting to this group! >> >> I have a model Class where each row has a unique alphanumeric ID string >> like 'EX39H'. >> >> This is the function I use to generate the code. >> >> def gen_class_code(): >> import string >> import random >> size = 5 >> max_size = 16 >> attempts = 1000 >> chars = string.ascii_uppercase + string.digits >> >> # lets try <attempts> times to generate unique id, else increase code >> length >> res = "" >> while (size <= max_size): >> for i in range(attempts): >> temp = ''.join(random.choice(chars) for i in range(size)) >> if not Class.objects.filter(code=temp).exists(): >> res = temp >> break >> if res : break >> >> return res >> >> How much would you set the attempts variable to and why? >> >> Thanks in advance >> Anton >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/django-users/-/-JYyShU_ciUJ. >> To post to this group, send email to django...@googlegroups.com<javascript:> >> . >> To unsubscribe from this group, send email to >> django-users...@googlegroups.com <javascript:>. >> For more options, visit this group at >> http://groups.google.com/group/django-users?hl=en. >> > > > > -- > George R. C. Silva > > Desenvolvimento em GIS > http://geoprocessamento.net > http://blog.geoprocessamento.net > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/sXE0uvWcK2IJ. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
