python - 我的 Django 项目中的“urls.py”文件在哪里?
问题描述
我正在使用 Django 和 Python 3.7。我使用 PyCharm 创建了一个项目,它创建了以下目录结构(一些自定义添加是我自己的):
mainpage
__init__.py
__pycache__
admin.py
apps.py
fixtures
management
migrations
models.py
services.py
templates
mainpage
trending.html
tests.py
urls.py
views.py
mainpage_project
__init__.py
__pycache__
settings
wsgi.py
manage.py
templates
venv
文件“urls.py”如下所示
from django.contrib import admin
from django.urls import path
from . import views
urlpatterns = [
path('trending', trending, name='trending'),
]
我对“urls.py”应该去哪里以及它应该包含什么感到困惑。当我启动服务器时,它给了我以下错误(“ModuleNotFoundError:没有名为'mainpage_project.urls'的模块”)......
(venv) localhost:mainpage_project davea$ python manage.py runserver
Performing system checks...
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x103096950>
Traceback (most recent call last):
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/base.py", line 379, in check
include_deployment_checks=include_deployment_checks,
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/management/base.py", line 366, in _run_checks
return checks.run_checks(**kwargs)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/checks/registry.py", line 71, in run_checks
new_errors = check(app_configs=app_configs)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/checks/urls.py", line 40, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/core/checks/urls.py", line 57, in _load_all_namespaces
url_patterns = getattr(resolver, 'url_patterns', [])
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/utils/functional.py", line 37, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/urls/resolvers.py", line 533, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/utils/functional.py", line 37, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/Users/davea/Documents/workspace/mainpage_project/venv/lib/python3.7/site-packages/django/urls/resolvers.py", line 526, in urlconf_module
return import_module(self.urlconf_name)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'mainpage_project.urls'
我的“urls.py”文件应该放在哪里,它应该包含什么?
解决方案
urls.py
你在你的项目中失踪了mainpage_project
。IE,
mainpage_project
__init__.py
__pycache__
settings
wsgi.py
urls.py #here
urls.py
负责映射项目中的路由和路径。例如,如果您想在 URL /trending/ 中显示某些内容,则必须先将其映射到此处。
从你的目录结构来看,就是mainpage_project
你的项目,mainpage
就是你的应用程序。
每个应用程序都可以拥有自己的urls.py
. Django 实际上会在您的项目文件夹中检查它。
典型的urls.py
样子:
from django.conf.urls import url
from django.contrib import admin
from django.urls import path
from mainpage import views
urlpatterns = [
path('trending', trending, name='trending'),
]
Update1:从评论中,您在添加时遇到导入错误,urls.py
因为在您的内部您urls.py
试图views
从mainpage_project
's 文件夹导入。
from . import views
.
表示法是指当前目录,即mainpage_project
目录。
views.py
mainpage_project 目录里面没有。但是views.py
存在于mainpage
目录中。所以更新为:
from mainpage import views
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