Import: cannot import name 'Usuario' from 'usuarios.models

Question

I have these models where the condo can have multiple apartments and an apartment can have multiple owners, each condo has a syndicate, a sub-index and a manager. I am adding sindico, subsindico and manager in condominium class, however, while performing makemigrations, I have the following error:

from usuarios.models import Usuario
ImportError: cannot import name 'Usuario' from 'usuarios.models

Condominium and Apartment Classes

from django.db import models
from endereco.models import Endereco
from usuarios.models import Usuario

class Condominio(models.Model):
   nome = models.CharField(max_length=255, null=False, blank=False)
   endereco = models.ForeignKey(Endereco, on_delete=models.CASCADE)
   sindico = models.ForeignKey(Usuario, on_delete=models.CASCADE)
   subsindico = models.ForeignKey(Usuario, on_delete=models.CASCADE)
   gerente = models.ForeignKey(Usuario, on_delete=models.CASCADE)


   class Meta:
       db_table = 'condominio'
       verbose_name = 'Condomínio'
       verbose_name_plural = 'Condomínios'

   def __str__(self):
       return self.nome


class Apartamento(models.Model):
   numero = models.CharField(max_length=8)
   condominio = models.ForeignKey('Condominio', on_delete=models.CASCADE)

   class Meta:
       db_table = 'apartamento'
       verbose_name = 'Apartamento'
       verbose_name_plural = 'Apartamentos'

   def __str__(self):
       return self.numero

Classes User and Profile

  class Usuario(AbstractBaseUser, PermissionsMixin):
     nome = models.CharField(max_length=255, null=False, blank=False)
     perfil_usuario = models.OneToOneField('PerfilUsuario', on_delete=models.CASCADE) 
     sexo = models.CharField(max_length=1, choices=SEXO)
     data_nascimento = models.DateField(null=False, blank=False)
     cpf = models.CharField(max_length=14, null=False, blank=False, unique=True)
    email = models.EmailField(null=False, blank=False, unique=True)
    telefone1 = models.CharField(max_length=12, null=False, blank=False)
    telefone2 = models.CharField(max_length=12, null=False, blank=False)
    apartamento = models.ForeignKey(Apartamento, on_delete=models.CASCADE)
    proprietario = models.BooleanField(default=False)
    is_active = models.BooleanField(default=True)
    is_admin = models.BooleanField(default=False)
    is_staff = models.BooleanField(default=False)

    objects = CustomUserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['nome']

    class Meta:
       db_table = 'usuario'
       verbose_name = 'Usuário'
       verbose_name_plural = 'Usuários'

   @property
   def get_primeiro_nome(self):
       return self.nome.split(' ')[0]

   def salvar(self, *args, **kwargs):
       super(Usuario, self).save()

   def __str__(self):
       return self.nome


class PerfilUsuario(models.Model):
    tipo_usuario = models.CharField(max_length=2, choices=TIPO_USUARIO, verbose_name='Tipo de Usuário')
    desabilitado = models.BooleanField(default=False)

    class Meta:
        db_table = 'perfil_usuario'
        verbose_name = 'Perfil do Usuário'

   @property
   def get_usuario(self):
       return self._usuario.nome

   def __str__(self):
       return self.tipo_usuario

TIPO_USUARIO = [
    ('S', 'Síndico'),
    ('SS', 'Subsíndico'),
    ('G', 'Gerente'),
    ('M', 'Morador'),
]

Stacktrace

Link to the full Stacktrace

[EDIT]

In other directories import normally occurs, but in this specific one, no

Example where import is normally occurring

from django.db import models
from usuarios.models import Usuario
from choices.tipo_aviso import TIPO_AVISO


class Aviso(models.Model):
    titulo = models.CharField(max_length=255)
    descricao = models.CharField(max_length=500)
    usuario = models.ForeignKey(Usuario, on_delete=models.CASCADE)
    tipo_aviso = models.CharField(max_length=1, choices=TIPO_AVISO, verbose_name='Tipos de Aviso')

    class Meta:
        db_table = 'aviso'
        verbose_name = 'Aviso'
        verbose_name_plural = 'Avisos'

    def __str__(self):
         return self.descricao

Answer 1

Delete the section from usuarios.models import Usuario and do the following:

usuario = models.ForeignKey('usuarios.Usuario', on_delete=models.CASCADE)

The same is valid for all snippets where you want to add the relationship, delete the import and refer to the class as mentioned above.