Create first line code Django - What of Error of the IndentationError expected an indented block

Question

import datetime

from django.db import models

from django.utils import timezone

class Question(models.Model):

    question_text = models.CharField(max_length=200)

    pub_date = models.DateTimeField('date published')

# AQUI

def __str__(self):

return self.question_text

def was_published_recently(self):

return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

class Choice(models.Model):

question = models.ForeignKey(Question, on_delete=models.CASCADE)

choice_text = models.CharField(max_length=200)

votes = models.IntegerField(default=0)

def __str__(self):

return self.choice_text

# Create your models here.