[英]How to solve the ImportError: cannot import name simplejson in Django
[英]How to solve this `ImportError: Cannot import name url` in Django 2.0?
好的,我正在关注这个https://tutorial.djangogirls.org/en/django_urls/教程。
当我运行代码python manage.py runserver
我收到以下错误:
Performing system checks...
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7faf45be1d08>
Traceback (most recent call last):
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 120, in inner_run
self.check(display_num_errors=True)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/management/base.py", line 364, in check
include_deployment_checks=include_deployment_checks,
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/management/base.py", line 351, in _run_checks
return checks.run_checks(**kwargs)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/checks/registry.py", line 73, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/core/checks/urls.py", line 23, in check_resolver
return check_method()
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/urls/resolvers.py", line 397, in check
for pattern in self.url_patterns:
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/urls/resolvers.py", line 536, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/piyush/.virtualenvs/myenv/lib/python3.5/site-packages/django/urls/resolvers.py", line 529, in urlconf_module
return import_module(self.urlconf_name)
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 "/home/piyush/Desktop/Djangosite/mysite/urls.py", line 16, in <module>
from django.urls import include, url
ImportError: cannot import name 'url'
和 mysite/urls.py :
from django.urls import include, url
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'', include('blog.urls')),
]
和 blog/urls.py :
from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^$', views.post_list, name='post_list'),
]
抱歉代码太长了,我在这里使用的 Django 版本是 2.0。
但是后来我尝试使用教程中使用的版本 1.11.8,我得到了同样的错误,但错误的最后一行说ImportError: cannot import name 'include'
而不是ImportError: cannot import name 'url'
我还不明白如何使用官方文档,我昨天自己启动了 Django。 带来不便敬请谅解。
丹克。
blog / urls.py:
from django.urls import path
from . import views
urlpatterns = [
path(r'^$', views.post_list, name='post_list'),
]
mysite / urls.py:
from django.urls import include, path
from django.contrib import admin
urlpatterns = [
path('admin/', admin.site.urls),
path(r'', include('blog.urls')),
]
根据建议,遵循文档:
新版django不允许使用
从 django.urls 导入包含,url
或者
从 django.conf.urls 导入 url
也许你可以使用re_path
from django.urls import include, re_path
urlpatterns = [
re_path(r'^index/$', views.index, name='index'),
re_path(r'^bio/(?P<username>\w+)/$', views.bio, name='bio'),
re_path(r'^weblog/', include('blog.urls')),
...
]
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