não consigo deletar um obj porfavor podem me ajudar 
aqui esta as views
from django.shortcuts import render, redirect, get_object_or_404
from .models import manut
# Create your views here.
def index(request):
return render(request,'index.html')
def home(request):
manutenc = manut.objects.all()
dados = {
'manutenc': manutenc
}
return render(request,'home.html',dados)
def manutencao(request):
return render(request,'manutencao.html')
def deleta(request,manut_id):
manuten = get_object_or_404(manut,id=manut_id)
manuten.delete()
return redirect('home')
def uma_manut(request,manut_id):
manuten = get_object_or_404(manut,id=manut_id)
dados = {
'manuten': manuten
}
return render(request,'uma-manut.html',dados)e o template
{% load static %}
<!DOCTYPE html>
<html>
<head>
{% include 'partial/links.html'%}
<link rel="stylesheet" href="{% static 'css/home.css'%}">
<title>home</title>
</head>
<body>
<header class="header">
<ul>
<li class="li1"><a href="{% url 'manute'%}">manutençao</a></li>
<li><a href="{% url 'inicial'%}">home</a>
<ul>
<li><a href="">criar mnt</a></li>
<li><a href="{% url 'pagina'%}">index</a></li>
</ul>
</li>
</ul>
</header>
<main class="main">
{% if manutenc %}
{% for manute in manutenc %}
<div class="main-div">
{% if manute.imagem == ''%}
<img src="{% static 'img/bandera-rio.jpg' %}" alt="" class="img-div">
{% else %}
<img src="{{ manute.imagem.url }}" alt="" class="img-div">
{% endif %}
<h1 class="h1-div">manutençao feita:</br>{{manute.nome}}</h1>
<p>{{ manute.tipo }}</p>
<div class="div-div">
<a href="{% url 'deletar' manute.id %}" type="button" class="botao-d">{{manute.id}}</a>
<input type="submit" value="edita" class="botao">
</div>
</div>
{% endfor %}
{% else %}
{% endif %}
</main>
</body>
</html>