File size: 367 Bytes
5e07a1f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | from django.db import models
from django.utils import timezone
def expensive_calculation():
expensive_calculation.num_runs += 1
return timezone.now()
class Poll(models.Model):
question = models.CharField(max_length=200)
answer = models.CharField(max_length=200)
pub_date = models.DateTimeField("date published", default=expensive_calculation)
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