gistfile1.py

from django.db import models

class Autor(models.Model):
	id = models.AutoField(primary_key=True)
	nombre = models.CharFIeld(max_length=100)

class Libro(models.Model):
	id = models.AutoField(primary_key=True)
	nombre = models.CharField(max_length=100)
	autor = models.ForeignKey(Autor)

class Biblioteca(models.Model):
	id = models.AutoField(primary_key=True)
	nombre = models.CharField(max_length=100)
	direccion = models.CharField(max_length=100)
	libros = models.ManyToManyField(Libro)