使用 python 和 Django 运行我的应用程序时出错

Question

我面临一个问题。我是 django 和 python 的新手。当我运行我的应用程序时，我收到以下错误。

    __import__(name)
  File "/opt/lampp/htdocs/mysite/polls/urls.py", line 2, in <module>
    from . import views
  File "/opt/lampp/htdocs/mysite/polls/views.py", line 40

                                                                                     ^
SyntaxError: invalid syntax

我在下面解释我的代码。

view.py：

from __future__ import unicode_literals
from django.shortcuts import get_object_or_404, render
from django.shortcuts import render
from .models import Choice, Question
from django.http import HttpResponseRedirect, HttpResponse
from django.urls import reverse
def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {'latest_question_list': latest_question_list}
    return render(request, 'polls/index.html', context)
def detail(request, question_id):
    try:
        question = Question.objects.get(pk=question_id)
    except Question.DoesNotExist:
        raise Http404("Question does not exist")
    return render(request, 'polls/detail.html', {'question': question})

def results(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/results.html', {'question': question})

def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the question voting form.
        return render(request, 'polls/detail.html', {
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('polls:results', args=(question.id,))

下面是我的另一个文件url.py。

from django.conf.urls import url
from . import views
app_name = 'polls'
urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^(?P<question_id>[0-9]+)/$', views.detail, name='detail'),
    url(r'^(?P<question_id>[0-9]+)/results/$', views.results, name='results'),
    url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]

这里我需要知道语法错误的确切位置，请帮我解决这个错误。

Answer 1

你只是在 view.py 的最后一行缺少一个右括号

return HttpResponseRedirect(reverse('polls:results', args=(question.id,))

应该是，

return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))