Django signals not receiving/working

Question

i am using django default receiver to handle signal. but its not working. i have modified User model in APP1 whenver new User object create a receiver in APP2 signal.py is listen to it, but its not working.

app1/model.py

class User(BaseModel, AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(
        verbose_name='email address',
        max_length=255,
        unique=True,
    )
    username = models.CharField(max_length=40, unique=True)
    first_name = models.CharField(max_length=30, blank=True, null=True)
    last_name = models.CharField(max_length=30, blank=True, null=True)
    is_active = models.BooleanField(default=True)
    is_admin = models.BooleanField(default=False)
    is_staff = models.BooleanField(default=False)
    is_email_verified = models.BooleanField(default=False)
    is_paid = models.IntegerField(default=0)
    access_token = models.CharField(max_length=128, blank=True) 

    objects = UserManager() 

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['username']  

    class Meta:
        db_table = 'users'  

    def __str__(self):
        return self.email

app2/signals.py

from django.conf import settings
from django.db.models.signals import post_save
from django.dispatch import receiver
from accounts.models import User    

@receiver(post_save, sender=User)#settings.AUTH_USER_MODEL)
def create_auth_token(sender, instance=None, created=False, **kwargs):
    print ("token generated")
    if created:
       print("data at signal ****", instance.email, instance)

Answer 1

Finally I got the answer. Its because I'm not importing signals.py on startup.

Working code

apps.py

from __future__ import unicode_literals

from django.apps import AppConfig


class StreamsConfig(AppConfig):
    name = 'streams'    

    def ready(self):
        print("at ready")
        import streams.signals

init.py

default_app_config = 'streams.apps.StreamsConfig'

after this change I'm receiving signals

Update:

As per django 3.0 documentation for newer applications adding default_app_config in init.py is not required if you are using dotted path to application configuration. https://docs.djangoproject.com/en/3.0/ref/applications/#django.apps.AppConfig.ready

Just replace

INSTALLED_APPS = (
 ...,
 'streams',
)

with

INSTALLED_APPS = (
 ...,
 'streams.apps.StreamsConfig',
)

It will work.