SyntaxError at/rango /，语法无效

Question

我正在关注tangowithdjango django tutorial.While我正在运行http://127.0.0.1/rango我收到以下错误消息。 误差

Django Version: 1.8.5 
    Exception Type: SyntaxError 
    Exception Value: invalid syntax (views.py, line 15) 

    Exception Location: /root/work/tango_with_django_project/rang/urls.py in <module>, line 2 

我的urls.py是

from django.conf.urls import patterns,url 
from rango import views 
urlpatterns = patterns('', 
    url(r'^$', views.index, name='index'), 
    url(r'^about/$', views.about, name='about'), 
    url(r'^category/(?P<slug>[\w\-]+)/$', views.category, name='category'),) 

和views.py是

from django.shortcuts import render 
from rango.models import Category,Page 

from django.http import HttpResponse 
def index(request): 
    category_list = Category.objects.order_by('-likes')[:5] 
    context_dict={'categories':category_list} 
    return render(request, 'rango/index.html', context_dict) 
def about(request): 
    return HttpResponse(" <a href='/rango/'>go back</a>") 
def category(request,slug): 
    context_dict={} 
    try: 
     my_category = Category.objects.get(slug=category_name_slug) 
     context_dict['category_name'] = my_category.name 

     pages = Page.objects.filter(category=my_category) 


     context_dict['pages'] = pages 

     context_dict['category'] = my_category 
    except Category.DoesNotExist: 

     pass 


    return render(request, 'rango/category.html', context_dict) 

回溯是

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/rango/about/ 

Django Version: 1.8.5 
Python Version: 2.7.9 
Installed Applications: 
['django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'rango'] 
Installed Middleware: 
['django.middleware.security.SecurityMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware'] 


Traceback: 
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers /base.py" in get_response 
    119.     resolver_match = resolver.resolve(request.path_info) 
    File "/usr/local/lib/python2.7/dist-packages/django /core/urlresolvers.py" in resolve 
    365.    for pattern in self.url_patterns: 
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in url_patterns 
401.   patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) 
File "/usr/local/lib/python2.7/dist-packages/django /core/urlresolvers.py" in urlconf_module 
395.    self._urlconf_module = import_module(self.urlconf_name) 
File "/usr/lib/python2.7/importlib/__init__.py" in import_module 
37.  __import__(name) 
File "/root/work/tango_with_django_project/tango_with_django_project/urls.py" in <module> 
23.  url(r'^rango/',include('rango.urls')), 
File "/usr/local/lib/python2.7/dist-packages/django/conf/urls/__init__.py" in include 
33.   urlconf_module = import_module(urlconf_module) 
File "/usr/lib/python2.7/importlib/__init__.py" in import_module 
37.  __import__(name) 
File "/root/work/tango_with_django_project/rango/urls.py" in <module> 
2. from . import views 

Exception Type: SyntaxError at /rango/about/ 
Exception Value: invalid syntax (views.py, line 15) 

在请帮助me.Thanks前进......

Answer 1

你identation是错误的，看在：

# Retrieve all of the associated pages. 
    # Note that filter returns >= 1 model instance. 
    pages = Page.objects.filter(category=category) 

    # Adds our results list to the template context under name pages. 
    context_dict['pages'] = pages 
    # We also add the category object from the database to the context dictionary. 
    # We'll use this in the template to verify that the category exists. 
    context_dict['category'] = category 

现在你有一个压痕错误的位置：

def index(request): 
     category_list = Category.objects.order_by('-likes')[:5] 
     context_dict={'categories':category_list} 
     return render(request, 'rango/index.html', context_dict)