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from django.db.models.signals import post_save
from django.dispatch import Signal
from django.dispatch.dispatcher import receiver
from .models import Group, Lesson
payment_added = Signal()
@receiver(post_save, sender=Group, dispatch_uid="new_group")
def hanlde_new_group(sender, instance, created, **kwargs):
if created:
print('print')
instance.lessons_count += 10
instance.save()
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