How to generate random numbers in django

问题

I want to generate automatic random numbers in a blank field while saving it in django.

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EDIT

The random numbers must be unique.

回答1:

EDIT: Changed solution to make random number unique and to use Django's make_random_password

function. Note the below assumes you are storing the random number in a field called

temp_password in a model UserProfile that is an extension of the User model.

random_number = User.objects.make_random_password(length=10, allowed_chars='123456789')

while User.objects.filter(userprofile__temp_password=random_number):
    random_number = User.objects.make_random_password(length=10, allowed_chars='123456789')

Also note that you can store the random code as a combination of letters and numbers as well. The

default value for allowed_chars is a string of letters and numbers minus a few that tend to cause

confusion among users (1, l, etc.)

More about Django's make_random_password function: https://docs.djangoproject.com/en/dev/topics/auth/#manager-functions

OLD:

import random

n = random.randint(a,b) # returns a random integer

in the example above a <= n <= b

Many more types of random numbers in the random class: http://docs.python.org/library/random.html

回答2:

It is more a python thing than a django thing.

You can find all the information about Random class here

Good luck!

来源：https://stackoverflow.com/questions/6353558/how-to-generate-random-numbers-in-django