Django models 无法从django中的另一个导入应用程序中模型的字段

我正在为开发RESTAPI而开发Django rest框架我无法将字段从一个应用程序导入到另一个应用程序。我的虚拟环境路径正确。我想从我的客户详细信息应用程序中获得一个ca_编号字段我无法在我的仪表详细信息应用程序中导入ca\U编号字段：以下是一些代码

1.smart\水\计量\ api\ v2/customer\详细信息/models.py

class CustomerDetailModel(models.Model):
ca_number = models.CharField(primary_key=True, max_length=100) 
name = models.CharField(max_length=200)
bp_number = models.CharField(max_length=100,blank=True)
billing_address = models.CharField(max_length=255)
supply_address=models.CharField(max_length=255,blank=True)
mobile_number = PhoneNumberField()
tel_number = PhoneNumberField(blank=True)

from django.db import models
from customer_details.models import CustomerDetailModel

# Create your models here.
class MeterDetailsModel(models.Model):
     mater_number=models.CharField(max_length=100, primary_key=True)
     ca_number = models.ForeignKey(CustomerDetailModel, on_delete=models.SET_NULL, null=True)

智能水计量api v2/水表详细信息/models.py

class CustomerDetailModel(models.Model):
ca_number = models.CharField(primary_key=True, max_length=100) 
name = models.CharField(max_length=200)
bp_number = models.CharField(max_length=100,blank=True)
billing_address = models.CharField(max_length=255)
supply_address=models.CharField(max_length=255,blank=True)
mobile_number = PhoneNumberField()
tel_number = PhoneNumberField(blank=True)

from django.db import models
from customer_details.models import CustomerDetailModel

# Create your models here.
class MeterDetailsModel(models.Model):
     mater_number=models.CharField(max_length=100, primary_key=True)
     ca_number = models.ForeignKey(CustomerDetailModel, on_delete=models.SET_NULL, null=True)

错误： 1.customer_details.models导入CustomerDetailModel无法解析Pylance（reportmissingimport）

2.我也尝试一下：

from django.db import models
from smart_water_metering_api_v2.customer_details.models import CustomerDetailModel

错误： 2.ModuleNotFoundError:没有名为“智能水计量api v2.客户详细信息”的模块