#url部分

url(r'^delfy/(?P<sid>\d+)$', views.delfy, name="delfy"),

#视图部分

def delfy(request, sid):
    FangLie.objects.filter(id=sid).delete()
return redirect(reverse("fangyuan"))

#前端部分

<a href="{% url 'delfy' li.id %}"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span></a>