('is_active',models.BooleanField(default=True,help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.',verbose_name='active')),
field=models.ManyToManyField(blank=True,help_text='Specific permissions for this user.',related_name='user_set',related_query_name='user',to='auth.Permission',verbose_name='user permissions'),