default callable called twice

[Nitesh Lohchab]

callable assigned to default parameter of a field called twice when adding a model entry via admin.

behaviour to reproduce this:

---

def abc():

print "this is abc"
return "abc"

class testt(models.Model):

text = models.CharField(max_length=12, default=abc)

---

Now when you try to add this model via admin you will "this is abc" printed twice.