我是python Django的新手，想知道为什么没有创建视图。这是我的urls.py，它在我的项目下。
from django.contrib import admin
from django.urls import path,include
from django.conf.urls import url
admin.autodiscover()
urlpatterns = ['',
path('admin/', admin.site.urls),
url('myapp/', include('myapp.url'))
]
这是我的视图.py，它在myapp文件夹中
from django.shortcuts import render
# Create your views here.
def hello(request):
return render(request,"myapp/templates/hello.html", {})
这是myapp文件夹中的我的url.py
from django.conf.urls import include, url
urlpatterns = ['', url('hello/', 'views.hello', name='hello'),]
这是完整的回溯
Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/management/base.py", line 395, in check
include_deployment_checks=include_deployment_checks,
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/management/base.py", line 382, in _run_checks
return checks.run_checks(**kwargs)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/checks/registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/core/checks/urls.py", line 23, in check_resolver
return check_method()
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/urls/resolvers.py", line 407, in check
for pattern in self.url_patterns:
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/urls/resolvers.py", line 588, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/urls/resolvers.py", line 581, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/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 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/mayureshkadam/PycharmProjects/Learning-Django/myproject/myproject/urls.py", line 23, in <module>
url('myapp/', include('myapp.url'))
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/usr/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 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/mayureshkadam/PycharmProjects/Learning-Django/myproject/myapp/url.py", line 3, in <module>
urlpatterns = ['', url('hello/', 'views.hello', name='hello'),]
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/conf/urls/__init__.py", line 13, in url
return re_path(regex, view, kwargs, name)
File "/home/mayureshkadam/Learning-Django/lib/python3.7/site-packages/django/urls/conf.py", line 73, in _path
raise TypeError('view must be a callable or a list/tuple in the case of include().')
TypeError: view must be a callable or a list/tuple in the case of include().
我读了一些教程，代码参考自https://www.tutorialspoint.com/django/django_url_mapping.htm但不确定我为什么会出错。
只需将url替换为path:
# main urls.py
urlpatterns = [
path('admin/', admin.site.urls),
path('myapp/', include('myapp.url'))
]
# app urls.py
from django.urls import path
from .view import hello
urlpatterns = [
path('hello/', hello, name='hello'),
]
正如您在documetation中看到的，path已经引入(从Django>=2.0开始(，所以您不必在这里使用url。下面的教程是针对旧版本的，所以它使用url和regex来生成URL。