PhoneNumberField（）找不到引用

Question

我已经安装了

  

pip install django-phonenumber-field

     

pip安装电话号码

与pipenv。但是当我要在我的models.py文件中使用它时 它说

Cannot find reference 'PhoneNumberField' in '__init__.py' 在PyCharm中

    from django.db import models
from phonenumber_field.modelfields import PhoneNumberField

# Create your models here.
from project_apps.core.models import TimestampedModel

class Profile(TimestampedModel):
    user = models.OneToOneField(
        'authentication.User',
        on_delete=models.CASCADE
    )
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=30)
    phone = models.PhoneNumberField()

    def __str__(self):
        return self.user.email

我已从modelfield导入PhoneNumberField。有帮助吗？