Python praw reddit api:在发布时可靠地获取帖子

问题描述

目前我有一个脚本，它每 30 秒查询一些 subreddits 并返回最新提交:

At the moment I have a script that queries some subreddits every 30 seconds and returns the newest submission:

while True:

    for post in reddit.subreddit(query_list).new(limit=1):

        if previous != post:
             # Do something

        previous = post

    time.sleep(30)

这样做的问题是，如果在该时间范围内有两个以上的帖子，它会跳过其中一个.我知道我可以设置更短的等待时间，或者我可以一次收到多个帖子并整理结果，但这并不能真正解决问题，只会降低它的可能性.

The problem with this is that if there are more than two posts in that time frame it'll skip one of them. I know I can set a smaller wait time, or I can get more than one post at a time and sort through the results, but that doesn't really fix the problem, it just makes it less likely.

我更愿意做的是通过持续打开的连接来订阅"一个提要，该连接在发布时接收帖子.这存在吗?如果没有，是否还有其他我没有想到的解决方案?

What I would much rather do, is 'subscribe' to a feed by having a continuously open connection that receives posts as they are posted. Does this exist? And if not, is there another solution I haven't thought of?

(我意识到我在说什么会给 reddit api 服务器带来很大的压力，所以它可能不存在，但我认为为了以防万一，值得一问)

(I realise what I'm talking about would put a large strain on the reddit api servers, so it probably doesn't exist, but I thought it was worth asking just in case)

推荐答案

是的，它存在于 PRAW 中，它被称为 流.您的整个代码块可以替换为以下内容:

Yes, this exists in PRAW and it's called stream. Your entire code block can be replaced with the following:

for post in reddit.subreddit(query_list).stream.submissions():
    # Do something

您可以通过将 submissions 替换为 comments 来流式传输 subreddit 评论.

You can stream subreddit comments by replacing submissions with comments.

其他模型也可以流式传输，例如 Multireddit 和 Redditor.

Other models can be streamed as well, such as Multireddit and Redditor.

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