def get_post(self, post_id):
post = self.loaded_posts.get(post_id, None)
if post is None:
path = u"{0}/{1}.md".format(self.working_dir, post_id)
if os.path.exists(path):
post = Post(post_id, working_dir=self.working_dir)
self.loaded_posts[post_id] = post
else:
post.refresh()
return post
