Terjadi ожидал блок с отступом

Question

from django.db import models
from django.contrib.auth import User

Создайте свои модели здесь.

class UserProfileInfo(model.Model):

user = models.OneToOneField(User,on_delete=models.CASCADE)

portfolio_site = models.URLField(blank=True)

profile_pic = models.ImageField(upload_to='profile_pics',blank=True)

def _str_(self):
        return self.user.username

user = models.OneToOneField(User,on_delete=models.CASCADE) ^ IndentationError: expected an indented block