circular imports error

[frank dilorenzo]

Hello,  I have 3 separate app as follow:

from django.db import models

# Create your models here.

# Supplier can have many shipments

class Supplier(models.Model):

name = models.CharField(max_length=120, null=True)

phone = models.CharField(max_length=15, null=True)

email = models.CharField(max_length=120, null=True)

created = models.DateTimeField(auto_now_add=True)

updated = models.DateTimeField(auto_now=True)

def __str__(self):

return self.name

-----------------------------------------

from django.db import models

from django.utils import timezone

# Create your models here.

# A specie can belong to many shipments

class Specie(models.Model):

name = models.CharField(max_length=120, null=True)

image = models.ImageField(upload_to="species", default="no_picture.png")

created = models.DateTimeField(default=timezone.now)

def __str__(self):

return self.name

--------------------------------------------

from django.db import models

from .models import Supplier

# from .models import Supplier, Specie

# Create your models here.

# A shipment can have many species

class Shipment(models.Model):

supplier = models.ManyToManyField(Suppliers)

specie = models.ManyToManyField(Species)

name = models.CharField(

max_length=120, null=True, help_text="enter name from Supplier above..."

)

slabel = models.CharField(max_length=10)

received = models.PositiveIntegerField(default=0)

bad = models.PositiveIntegerField(default=0)

non = models.PositiveIntegerField(default=0)

doa = models.PositiveIntegerField(default=0)

para = models.PositiveIntegerField(default=0)

released = models.PositiveIntegerField(default=0)

entered = models.BooleanField(default=False)

created = models.DateTimeField(default=timezone.now)

def __str__(self):

return f"{self.slabel}"

=======================

when trying to migrate I get this error message:

ImportError: cannot import name 'Supplier' from partially initialized module 'shipments.models' (most likely due to a circular import) (/Users/frankd/django_projects/stlzoo/src/shipments/models.py)

I am stuck here and cannot seem to resolve this error.  I would truly appreciate any help on this.  Thanks.

Frank

[Adam Stein]

Since you said 3 separate apps, I assume each of these classes are in a separate file. However, you have the line:

from .models import Supplier

which would make it seem that Supplier is defined in the same file as Shipment. Shipment should be in ".models" and if Supplier is also defined in the same file, no need to import it. If it's defined in a different file, then the import should reference another place, not ".models".

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[frank dilorenzo]

I hate to sound corny but you sir are my hero!.  Thanks,  it all works now

 

frank-

To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/a5c49b5dedd58f28ba9d7039ed8977b626b53a1e.camel%40csh.rit.edu.

[Adam Stein]

Glad to be of help. Sometimes it just takes a fresh pair of eyes.

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Adam (ad...@csh.rit.edu)