help for creating relationship between User model an another model !!

Hi django users,
I am new to django and i am using django 1.10, i follow up all the tutorial in the documentation and now i have build an blog application with models like :
Article , Commentaire(comment in english) and Tag. It's working but now i want to add an relation between User (the one who is connected and creating the article)
and the Article but i dont know how to do this . I find on google and try what i see but nothing ran ,
this is my code

Saisissez le code ici.

from django.contrib.auth.models import User


class Article(models.Model):
    titre = models.CharField(max_length=254)
    description = models.TextField()
    contenu = models.TextField()
    date_publication = models.DateField()
    image = models.ImageField(upload_to='blog/static/blog/images/')
    publie = models.BooleanField(default=False) # par defaut un article n'est pas publier
    tag = models.ManyToManyField(Tag)
    auteur = models.ForeignKey('auth.User', verbose_name='auteur', default=1)# here is the relationshp creation

..

And when i run

python manager.py migrate

it give me a long error message with at the end of it :

TypeError: int() argument must be a string, a bytes-like object or a number, not 'datetime.datetime'
Saisissez le code ici...

Please help i dont know how to do !!!

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