Python django渲染模板问题

我刚完成django项目，但有一些问题。我想展示学院里的头衔。当我运行

python manage.py runserver

时，一切正常，但标题不显示。我不知道是什么问题

class.html

{% extends "base.html" %}
{% block content %}
    <div>
        <div style="margin-top: 200px;">
        </div>
        {% for academy in academys %}
            <h3>{{ academy.title }}</h3>
        {% endfor %}
    </div>
{% endblock %}

视图.py

...
url(r'^academy/class', 'academy.views.class', name='class'),

from django.shortcuts import render, Http404
from .models import Academy

def class(request):
    template = 'academy/class.html'
    try:        
        academys = Academy.objects.all()
        context = {'academy': academys}

    except Academy.DoesNotExit:
        raise Http404

    if request.user.is_authenticated():
        return render(request, template, context)
    else:
        return HttpResponseRedirect("/account/login/")

...
class Academy(models.Model):
    title = models.CharField(max_length=50)

    def __unicode__(self):
        return self.title

型号.py

...
url(r'^academy/class', 'academy.views.class', name='class'),

from django.shortcuts import render, Http404
from .models import Academy

def class(request):
    template = 'academy/class.html'
    try:        
        academys = Academy.objects.all()
        context = {'academy': academys}

    except Academy.DoesNotExit:
        raise Http404

    if request.user.is_authenticated():
        return render(request, template, context)
    else:
        return HttpResponseRedirect("/account/login/")

...
class Academy(models.Model):
    title = models.CharField(max_length=50)

    def __unicode__(self):
        return self.title

---

您的上下文字典键不正确。而不是

context = {'academy': academys} 

类型

---

您的上下文字典键不正确。而不是

context = {'academy': academys} 

类型

---

您的上下文字典键不正确。而不是

context = {'academy': academys} 

类型

---

您的上下文字典键不正确。而不是

context = {'academy': academys} 

类型

---

你通过的是“学院”，而不是“学院”

context={'academys ': academys}

---

你通过的是“学院”，而不是“学院”

context={'academys ': academys}

---

你通过的是“学院”，而不是“学院”

context={'academys ': academys}

---

你通过的是“学院”，而不是“学院”

context={'academys ': academys}