Django的錯誤：datetime.datetime

Question

當我執行python manage.py migrate，我得到的屏幕上這個錯誤：

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 146, in column 
sql 
default_value = self.effective_default(field) 

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 211, in effect 
ive_default 
default = field.get_db_prep_save(default, self.connection) 

File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init_.py", line 710, in get_ 
db_prep_save 
prepared=False) 

File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/init.py", line 2003, in get 
db_prep_value 
value = self.get_prep_value(value) 

File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init_.py", line 2010, in get 
_prep_value 
if value and ':' in value: 
TypeError: argument of type 'datetime.datetime' is not iterable 

我試圖執行python manage.py syncdb，但仍然出現同樣的錯誤。 可能是什麼問題？

Models.py瞭解更多信息：

from django.db import models 
    import datetime 
    from django.utils import timezone 

class Machine(models.Model): 
    name = models.CharField(max_length=20, unique=True) 
    ins_date = models.DateField(default=timezone.now) 
    mod_date = models.DateField(default=timezone.now) 
    nagios_name = models.CharField(max_length=20) 
    dns = models.CharField(max_length=30) 
    ip_int = models.GenericIPAddressField(null=True, blank=True) 
    ip_ext = models.GenericIPAddressField() 
    vlan = models.IntegerField(null=True, blank=True) 
    custom = models.BooleanField(default=False) 
    def __str__(self): 
    return self.name 

class SecurityGroup(models.Model): 
    name = models.CharField(max_length=20) 
    description = models.CharField(max_length=30, null=True, blank=True) 
    ins_date = models.DateField(default=timezone.now) 
    mod_date = models.DateField(default=timezone.now) 
    def __str__(self): 
    return self.name 

class NACL(models.Model): 
    machine = models.ForeignKey(Machine) 
    securityGroup = models.ForeignKey(SecurityGroup) 
    ins_date = models.DateField(default=timezone.now) 
    mod_date = models.DateField(default=timezone.now) 

BYADMIN_CHOICES = ((1, "Input"),(0, "Output"),) 

class Rule(models.Model): 
    type_rule = models.CharField(max_length=10) 
    description = models.CharField(max_length=30, null=True, blank=True, default=None) 
    protocol = models.CharField(max_length=10) 
    port_range_min = models.IntegerField() 
    port_range_max = models.IntegerField(null=True, blank=True) 
    #sg_object = models.CharField(max_length=20, null=True, blank=True) 
    ip_object = models.GenericIPAddressField(null=True, blank=True) 
    securityGroup_object = models.ForeignKey(SecurityGroup, null=True, blank=True) 
    bound = models.BooleanField(choices=BYADMIN_CHOICES, default=1) #if   bound == True: input else: output 
    class Meta: 
    unique_together = (("type_rule", "protocol", "port_range_min", "bound")) 
    def __str__(self): 
    return ("INPUT: " if(self.bound) else "OUTPUT: ") + self.type_rule + " " + self.protocol + " " + str(self.port_range_min) + " " + (str(self.securityGroup_object) if(self.securityGroup_object != None) else self.ip_object) 

class Sg_rule(models.Model): 
    securityGroup = models.ForeignKey(SecurityGroup) 
    rule = models.ForeignKey(Rule) 
    ins_date = models.DateField(default=timezone.now) 
    mod_date = models.DateField(default=timezone.now) 

class Service(models.Model): 
    name = models.CharField(max_length=20) 
    macroService = models.CharField(max_length=20) 
    def __str__(self): 
    return self.name 


class M_Service(models.Model): 
    machine = models.ForeignKey(Machine) 
    service = models.ForeignKey(Service) 
    ins_date = models.DateField(default=timezone.now) 
    mod_date = models.DateField(default=timezone.now) 

，這是失敗的遷移：

# -*- coding: utf-8 -*- 
from __future__ import unicode_literals 

from django.db import migrations, models 
import datetime 
from django.utils.timezone import utc 


class Migration(migrations.Migration): 

dependencies = [ 
    ('adminApp', '0009_auto_20160229_1716'), 
] 

operations = [ 
    migrations.AddField(
     model_name='rule', 
     name='ip_object', 
     field=models.GenericIPAddressField(default=datetime.datetime(2016, 2, 29, 17, 17, 42, 169176, tzinfo=utc)), 
     preserve_default=False, 
    ), 
    migrations.AlterField(
     model_name='rule', 
     name='sg_object', 
     field=models.CharField(max_length=20), 
    ), 
] 

Answer 1

遷移是否試圖使用日期時間作爲默認的IP地址字段。這沒有道理！

field=models.GenericIPAddressField(default=datetime.datetime(2016, 2, 29, 17, 17, 42, 169176, tzinfo=utc)),