Python：Django TypeError：object（）不带参数

Question

我正在将 django 应用程序从 1.x 移植到 2.1，但遇到了“TypeError：object() 不接受任何参数”的错误消息。我试图解决这个问题很长一段时间，但即使经过几天的调试和在线搜索，我什至没有得到任何线索

已安装的应用：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',
    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'allauth.socialaccount.providers.github',
    'timezone_field',
    'axes',
    'humans',
    'boxes',
    'pages',
]

中间件设置：

MIDDLEWARE = [
    'whitenoise.middleware.WhiteNoiseMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.middleware.security.SecurityMiddleware',
]

缩进没有问题，

芹菜版本：4.2.1
乌鸦版本：6.9.0
django 版本：2.1

这是我的 wsgi.py

import os
from raven.contrib.django.raven_compat.middleware.wsgi import Sentry

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
application=Sentry(get_wsgi_application())

这是错误日志的摘录

File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)   
File "<frozen importlib._bootstrap>", line 986, in _gcd_import   
File "<frozen importlib._bootstrap>", line 969, in _find_and_load   
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked  
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked   
File "<frozen importlib._bootstrap_external>", line 665, in exec_module   
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed   
File "/app/wsgi.py", line 16, in <module>
        application=Sentry(get_wsgi_application())   
File "/usr/local/lib/python3.5/dist-packages/django/core/wsgi.py", line 13, in get_wsgi_application
        return WSGIHandler()   
File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/wsgi.py", line 136, in __init__
        self.load_middleware()   
File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 36, in load_middleware
        mw_instance = middleware(handler)
TypeError: object() takes no parameters

使用 CustomSentry 后出错：

in <module>
    application = CustomSentry(get_wsgi_application())
  File "/usr/local/lib/python3.5/dist-packages/django/core/wsgi.py", line 13, in get_wsgi_application
    return WSGIHandler()
  File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/wsgi.py", line 136, in __init__
    self.load_middleware()
  File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 36, in load_middleware
    mw_instance = middleware(handler)
TypeError: object() takes no parameters

我尝试使用 ExceptionMiddleware 捕获异常，现在我收到以下错误：

application = CustomSentry(get_wsgi_application())
File "/usr/local/lib/python3.5/dist-packages/django/utils/deprecation.py", line 85, in __init__
    super().__init__()
TypeError: __init__() missing 1 required positional argument: 'application'

任何帮助将不胜感激。

Answer 1

在你的 /app/wsgi.py 模块中试试这个，

import os
from raven.contrib.django.raven_compat.middleware.wsgi import Sentry

from django.core.wsgi import get_wsgi_application
from django.utils.deprecation import MiddlewareMixin


class CustomSentry(MiddlewareMixin, Sentry):
    pass


os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
application = CustomSentry(get_wsgi_application())

参考文献
1.object() takes no parameters in django 1.10
2.Django exception middleware: TypeError: object() takes no parameters

Answer 2

该错误表明您的中间件列表中有一个旧式中间件。旧式中间件在实例化时不接收参数，而新式中间件接收处理程序。

现在，根据您的设置，唯一的非 Django 中间件是 whitenoise，但您说即使将其注释掉，错误仍然存​​在。

这里有一些建议可以帮助您弄清楚发生了什么：

• 正如我所评论的，向 Django 源代码添加断点或打印语句以找出导致问题的中间件。

• 确保您正在编辑的设置文件是实际使用的设置文件。

• 使用 Python shell 检查MIDDLEWARE 设置的实际值：

  $ python manage.py shell
  >>> from django.conf import settings
  >>> settings.MIDDLEWARE
  ...