Python Django信号.x27；功能'；对象没有属性'；锁'；错误

我有一个功能是接收来自系统所有型号的信号。当我通过Django命令进行数据库转储填充时，我希望信号被中断，这样在通过这种方式创建模型实例时就不会调用它

这是我的接收器功能：

@receiver(post_save)
def trigger_payment(sender, instance=None, created=False, **kwargs):
    from TreasuryManagementApp.models import PaymentApplicationTrigger

    if instance.__class__.__name__ not in trigger_models:
        return

    strategies = EventStrategies()

    application_triggers = PaymentApplicationTrigger.objects.filter(event_name__in=trigger_models[instance.__class__.__name__]['event_names'])
    for application_trigger in application_triggers:
        strategies.execute(application_trigger, instance)

这是我的命令代码，我试图从信号中断开功能：

class Command(BaseCommand):
    help = _("""Run this command to import partners and operators from plane files""")

    def execute(self, *args, **kwargs):
        from TreasuryManagementApp.controllers import trigger_payment

        Signal.disconnect(trigger_payment)
        self.import_partners()
        self.import_operators()
        self.import_dead_ones()

问题是对

的调用发出信号。disconnect（）

引发以下异常：

Traceback (most recent call last):

  File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/base.py", line 316, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/taxistas/GeneralApp/management/commands/startdatabase.py", lin
e 21, in execute
    call_command('import_people')
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/__init__.py", line 148, in call_command
    return command.execute(*args, **defaults)
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/taxistas/GeneralApp/management/commands/import_people.py", lin
e 433, in execute
    Signal.disconnect(trigger_payment)
  File "/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/dispatch/dispa
tcher.py", line 138, in disconnect
    with self.lock:
AttributeError: 'function' object has no attribute 'lock'

回溯（最近一次呼叫最后一次）：
文件“manage.py”，第15行，在
从命令行（sys.argv）执行命令
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/uuuu init_uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu.py”，第381行，从命令行执行
utility.execute（）
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/_init__uuu.py”，执行中的第375行
self.fetch_命令（子命令）。从_argv（self.argv）运行_
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/base.py”，第316行，从argv开始运行
self.execute（*args，**cmd_选项）
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/taxistas/GeneralApp/management/commands/startdatabase.py”，林
E21，执行中
调用命令（“导入人员”）
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/core/managemen
t/uuu init_uuuu.py”，第148行，在call_命令中
return命令。execute（*args，**默认值）
文件“/Users/hugovillalobos/Documents/Code/taxistas项目/taxistas/GeneralApp/management/commands/import_people.py”，林
E433，执行中
信号断开（触发付款）
文件“/Users/hugovillalobos/Documents/Code/TaxistasProject/TaxistasVenv/lib/python3.7/site-packages/django/dispatch/dispa
tcher.py”，第138行，断开连接
使用self.lock：
AttributeError:“函数”对象没有属性“锁”

使用

post\u save

而不是

信号

。中的文档说明：“所有信号都是django.dispatch.Signal实例”，因此，您必须断开或连接实例，而不是

Signal

类

从django.db.models.signals导入后保存
类命令（BaseCommand）：
help=389;（“运行此命令以从平面文件”“导入伙伴和运算符”）
def执行（self、*args、**kwargs）：
从TreasuryManagementApp.controllers导入触发付款
后保存。断开连接（触发付款）
self.import_partners（）
self.import_操作符（）
self.import\u dead\u ones（）
post_save.connect（触发付款）#别忘了重新连接