Django 2python“url”fi中的循环导入

[Sun Mar 10 20:30:47.407794 2019] [wsgi:error] [pid 21457:tid 139659590813440] Internal Server Error: /ai_chat_bot/users/login [Sun Mar 10 20:30:47.407814 2019] [wsgi:error] [pid 21457:tid 139659590813440] Traceback (most recent call last): [Sun Mar 10 20:30:47.407816 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/urls/resolvers.py", line 542, in url_patterns [Sun Mar 10 20:30:47.407818 2019] [wsgi:error] [pid 21457:tid 139659590813440] iter(patterns) [Sun Mar 10 20:30:47.407819 2019] [wsgi:error] [pid 21457:tid 139659590813440] TypeError: 'module' object is not iterable [Sun Mar 10 20:30:47.407821 2019] [wsgi:error] [pid 21457:tid 139659590813440] [Sun Mar 10 20:30:47.407822 2019] [wsgi:error] [pid 21457:tid 139659590813440] During handling of the above exception, another exception occurred: [Sun Mar 10 20:30:47.407823 2019] [wsgi:error] [pid 21457:tid 139659590813440] [Sun Mar 10 20:30:47.407825 2019] [wsgi:error] [pid 21457:tid 139659590813440] Traceback (most recent call last): [Sun Mar 10 20:30:47.407826 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/core/handlers/exception.py", line 35, in inner [Sun Mar 10 20:30:47.407828 2019] [wsgi:error] [pid 21457:tid 139659590813440] response = get_response(request) [Sun Mar 10 20:30:47.407829 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/utils/deprecation.py", line 93, in __call__ [Sun Mar 10 20:30:47.407831 2019] [wsgi:error] [pid 21457:tid 139659590813440] response = self.process_request(request) [Sun Mar 10 20:30:47.407832 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/middleware/common.py", line 60, in process_request [Sun Mar 10 20:30:47.407834 2019] [wsgi:error] [pid 21457:tid 139659590813440] if self.should_redirect_with_slash(request): [Sun Mar 10 20:30:47.407835 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/middleware/common.py", line 78, in should_redirect_with_slash [Sun Mar 10 20:30:47.407837 2019] [wsgi:error] [pid 21457:tid 139659590813440] not is_valid_path(request.path_info, urlconf) and [Sun Mar 10 20:30:47.407838 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/urls/base.py", line 157, in is_valid_path [Sun Mar 10 20:30:47.407840 2019] [wsgi:error] [pid 21457:tid 139659590813440] resolve(path, urlconf) [Sun Mar 10 20:30:47.407841 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/urls/base.py", line 24, in resolve [Sun Mar 10 20:30:47.407843 2019] [wsgi:error] [pid 21457:tid 139659590813440] return get_resolver(urlconf).resolve(path) [Sun Mar 10 20:30:47.407844 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/urls/resolvers.py", line 498, in resolve [Sun Mar 10 20:30:47.407845 2019] [wsgi:error] [pid 21457:tid 139659590813440] for pattern in self.url_patterns: [Sun Mar 10 20:30:47.407856 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/utils/functional.py", line 36, in __get__ [Sun Mar 10 20:30:47.407858 2019] [wsgi:error] [pid 21457:tid 139659590813440] res = instance.__dict__[self.name] = self.func(instance) [Sun Mar 10 20:30:47.407859 2019] [wsgi:error] [pid 21457:tid 139659590813440] File "/opt/python/ai_rest_env/lib/python3.5/site-packages/django/urls/resolvers.py", line 549, in url_patterns [Sun Mar 10 20:30:47.407861 2019] [wsgi:error] [pid 21457:tid 139659590813440] raise ImproperlyConfigured(msg.format(name=self.urlconf_name)) [Sun Mar 10 20:30:47.407863 2019] [wsgi:error] [pid 21457:tid 139659590813440] django.core.exceptions.ImproperlyConfigured: The included URLconf 'AI_Chatbot_Server.urls' does not appear to have any patterns in it. If you see valid patterns in the file then the issue is probably caused by a circular import.

from django.urls import path from .controller import chatbot_main_controller urlpatterns = [ path('get_question/', chatbot_main_controller.ChatBotMainController.get_question, name="get_question"), ]

from django.urls import path from ..weather.controller import weather_info_controller urlpatterns = [ path('get_weather_info/', weather_info_controller.WeatherInfoController.get_weather_info, name="get_weather_info"), ]

. ├─.idea ├─AI_Chatbot_Server │ └─settings ├─apps │ ├─chatbot │ │ ├─ai_models │ │ │ ├─cnn │ │ │ │ └─temp │ │ │ ├─estimator │ │ │ ├─multiclass_cnn │ │ │ │ └─temp │ │ │ ├─multiclass_dnn │ │ │ │ └─temp │ │ │ └─tensorflow │ │ ├─ai_model_handler │ │ ├─common │ │ ├─config │ │ ├─controller │ │ ├─data_processor │ │ ├─emoji │ │ │ ├─common │ │ │ ├─controller │ │ │ ├─model │ │ │ ├─repository │ │ │ ├─serializer │ │ │ └─service │ │ ├─evaluation │ │ │ ├─controller │ │ │ ├─model │ │ │ ├─repository │ │ │ ├─serializer │ │ │ └─service │ │ ├─keyword │ │ │ ├─common │ │ │ ├─controller │ │ │ ├─helper │ │ │ ├─logic │ │ │ ├─models │ │ │ ├─repository │ │ │ ├─serializer │ │ │ └─service │ │ ├─models │ │ ├─repository │ │ ├─serializer │ │ ├─service │ │ ├─utils │ │ └─validation │ ├─common │ ├─users │ │ ├─common │ │ ├─controller │ │ ├─json │ │ ├─model │ │ ├─repository │ │ ├─serializer │ │ └─service │ └─weather │ ├─common │ ├─controller │ └─service ├─common └─static ├─data └─resources └─images └─emoji

import logging from json.decoder import JSONDecodeError from django.core.exceptions import ObjectDoesNotExist from django.db.utils import IntegrityError from django.http import JsonResponse from rest_framework.decorators import api_view from ..common.http_code import HttpCode from ..common.http_message import HttpMessage from ..common.user_constant import UserConstant from ..common.utility import Utility from ..json.response import Response from ..service.login_service import LoginService from ..service.login_service import LoginService as loginService class LoginController: logger = logging.getLogger('LoginController') @api_view(['POST']) def login(request): LoginController.logger.info("LoginController.login : START") http_status_code = HttpCode.HTTP_ZERO post_data = None responseData = None # check valid json format & added json format exception try: post_data = Utility.convertRequestBodyToJson(request) except JSONDecodeError as ex: responseData = Response.preparedResponse(UserConstant.ERROR, str(ex.args), None) LoginController.logger.error(UserConstant.JSON_PARSE_ERROR + str(ex)) http_status_code = HttpCode.HTTP_BAD_REQUEST # check request param if post_data != None: username = post_data['username'] password = post_data['password'] # check valid user & password try: try: valid_user = loginService.check_username(username) except ObjectDoesNotExist: valid_user = None if valid_user != None: decoded_password = loginService.decoded_password(valid_user) if decoded_password == password: # save user access with token user_access = loginService.set_user_access(valid_user) if user_access != None: loginService.save_user_access(user_access) user_role = loginService.get_user_role(valid_user) login_service = LoginService() # process user_access_history data # login_service.process_user_access_history(valid_user.username, user_access.token) if user_role != None: # prepare the user response object users = {'id': valid_user.id, 'username': valid_user.username, 'token': user_access.token, 'role': user_role.name, 'user_image_url': valid_user.user_image_url} # added common method for prepare response object responseData = Response.preparedResponse(UserConstant.SUCCESS, UserConstant.USER_AUTHENTICATION_SUCCESSFUL, users) http_status_code = HttpCode.HTTP_OK else: responseData = Response.preparedResponse(UserConstant.ERROR, UserConstant.INCORRECT_USER_PASSWORD, None) http_status_code = HttpCode.HTTP_UNAUTHORIZED else: responseData = Response.preparedResponse(UserConstant.ERROR, UserConstant.USER_AUTHENTICATION_FAIL, None) http_status_code = HttpCode.HTTP_UNAUTHORIZED except IntegrityError as ex: responseData = Response.preparedResponse(UserConstant.ERROR, str(ex.args), None) LoginController.logger.error(UserConstant.DATABASE_ERROR + str(ex)) http_status_code = HttpCode.HTTP_INTERNAL_SERVER_ERROR except Exception as ex: LoginController.logger.error(UserConstant.ERROR + str(ex)) responseData = Response.preparedResponse(UserConstant.ERROR, HttpMessage.INTERNAL_SERVER_ERROR, None) http_status_code = HttpCode.HTTP_INTERNAL_SERVER_ERROR LoginController.logger.info("LoginController.login : END") return JsonResponse(status=http_status_code, data=responseData, safe=False)

1条回答

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1楼 · 发布于 2024-04-27 04:24:53

让我从文档中搜索与circular import相关的问题 https://docs.djangoproject.com/en/2.0/search/?q=circular+import

下面我列出清单，并试着给出循环进口的责任事项。由于您还没有共享完整的代码，所以浏览了文档并重新考虑了您的代码建议的文件。希望这会有帮助。在

1。设置

https://docs.djangoproject.com/en/2.0/ref/settings/#message-level

If you override MESSAGE_LEVEL in your settings file and rely on any of the built-in constants, you must import the constants module directly to avoid the potential for circular imports, e.g.:

from django.contrib.messages import constants as message_constants
MESSAGE_LEVEL = message_constants.DEBUG

https://docs.djangoproject.com/en/2.0/ref/settings/#message-tags

If you override MESSAGE_TAGS in your settings file and rely on any of the built-in constants, you must import the constants module directly to avoid the potential for circular imports, e.g.:

^{pr2}$

2编码风格

https://docs.djangoproject.com/en/2.0/internals/contributing/writing-code/coding-style/#imports

您可以运行“isort-rc”命令来组织导入。在

3翻译

https://docs.djangoproject.com/en/2.0/topics/i18n/translation/#how-django-discovers-language-preference

If you define a custom LANGUAGES setting, as explained in the previous bullet, you can mark the language names as translation strings – but use gettext_lazy() instead of gettext() to avoid a circular import.
Here’s a sample settings file:

from django.utils.translation import gettext_lazy as _
LANGUAGES = [
    ('de', _('German')),
    ('en', _('English')),
]

4 Django 1.7发行说明

https://docs.djangoproject.com/en/2.0/releases/1.7/#django-utils-module-loading-import-by-path

5模型字段参考

class Car(models.Model):
    manufacturer = models.ForeignKey(
        'production.Manufacturer',
        on_delete=models.CASCADE,
    )

This sort of reference, called a lazy relationship, can be useful when resolving circular import dependencies between two application.

https://docs.djangoproject.com/en/2.0/ref/models/fields/#foreignkey

6。模型信号

https://docs.djangoproject.com/en/2.0/ref/signals/

7。在Django中自定义身份验证

https://docs.djangoproject.com/en/2.0/topics/auth/customizing/#changing-to-a-custom-user-model-mid-project

8。高级测试主题

https://docs.djangoproject.com/en/2.0/topics/testing/advanced/#controlling-creation-order-for-test-databases

9。迁移

https://docs.djangoproject.com/en/2.0/topics/migrations/#squashing-migrations

可能还有其他问题，但可能会对你有所帮助。在

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