update_points.py

from django.core.management.base import BaseCommand
from myapp.models import UserProfile


class Command(BaseCommand):
    help = 'Update points of all users'  # help text
    
    def add_arguments(self, parser): # it takes a `parser` as an argument
        parser.add_argument('-s', action='store_true', help='silent')
     
    def handle(self, *args, **options):
        for user in UserProfile.objects.all():
            points = 0
            for problem in user.solved_list.all():
                points += problem.type.points
            user.points = points
            if not options['s']:  # We have all our argumets in the options dict
                self.stdout.write(self.style.SUCCESS(str(user)+' new points: '+str(points)))
            user.save()