Django 2:如何在应用程序初始化时运行一次代码？

from django.dispatch import Signal

app_initialized = Signal()

def run_on_app_init(sender, **kwargs):
    # 在这里编写你想要运行的代码
    print("应用程序初始化完成！")

# 将信号处理函数与信号关联
app_initialized.connect(run_on_app_init)

from django.apps import AppConfig

class YourAppConfig(AppConfig):
    name = 'your_app_name'

    def ready(self):
        from . import signals  # 导入signals.py文件
        signals.app_initialized.send(sender=self.__class__)

INSTALLED_APPS = [
    ...
    'your_app_name.apps.YourAppConfig',
    ...
]