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"""
Callable defaults
You can pass callable objects as the ``default`` parameter to a field. When
the object is created without an explicit value passed in, Django will call
the method to determine the default value.
This example uses ``datetime.datetime.now`` as the default for the ``pub_date``
field.
"""
from datetime import datetime
from django.db import models
class Article(models.Model):
headline = models.CharField(max_length=100, default='Default headline')
pub_date = models.DateTimeField(default=datetime.now)
def __str__(self):
return self.headline
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