我做了这样的事情，它抛出：UnboundLocalError at / local variable 'context' referenced before assignment error答案

【问题标题】：I have done something like this and it throws: UnboundLocalError at / local variable 'context' referenced before assignment error我做了这样的事情，它抛出：UnboundLocalError at / local variable 'context' referenced before assignment error
【发布时间】：2019-07-11 04:07:34
【问题描述】：

修改代码后：

class Index(FrontendMixin,TemplateView):
    template_name = "myapp/frontend/index.html"

def get_context_data(self,**kwargs):
    super().get_context_data(**kwargs)

    context = []

    if Post.objects.filter(deleted_at__isnull=True).count() > 1:
        context['Allpost'] = Post.objects.filter(publish=True).order_by('-created_at')
        context['mostrecentnews'] = News.objects.filter(publish=True, deleted_at__isnull=True).order_by('-created_at')[:1]
    else:
        context = []

    return {'context':context}

它抛出 TypeError at list indices must be integers or slices, not str error.

class Index(FrontendMixin,TemplateView):
    template_name = "myapp/frontend/index.html"

def get_context_data(self,**kwargs):
    super().get_context_data(**kwargs)

    if Post.objects.filter(deleted_at__isnull=True).count() > 1:
        context['Allpost'] = Post.objects.filter(publish=True).order_by('-created_at')
        context['mostrecentnews'] = News.objects.filter(publish=True, deleted_at__isnull=True).order_by('-created_at')[:1]
    else:
        context = []

    return {'context':context}

抛出：UnboundLocalError at / local variable 'context' referenced before assignment error

请建议摆脱这个错误

【问题讨论】：

在第二个代码块中context 超出范围
不，它在范围内，但我忘记分配超级调用的结果。我现在得到了答案。

标签： python django

【解决方案1】：

您忘记分配超级调用的结果。

context = super().get_context_data(**kwargs)

并将另一个分配删除到一个空列表中。

【讨论】：