newblog.py

# URL in urls.py

url(r'blog/(?P<post_id>[\d]+)/$', 'blog_post', name='blog_post'),

# VIEW in views.py

def blog_post(request, post_id):

        post=BlogPost.objects.get(id=blog_id)
        return render(request, 'blog_post.html', {
                'post':post,
                })
                
# HTML in template somewhere

<div class="blog">
    <div class="blog-title">{{ post.title }}</div>
    <div class="blog-body">{{ post.body }}</div>
</div>