PRAW 用于循环仅返回最后一个值

Question

尝试创建一个可以从sub_ids列表中提取注释的 PRAW 抓取器。仅返回最后sub_ids注释数据。

我

猜我一定是在覆盖某些东西。我已经查看了其他问题，但由于我使用的是 PLAW它有特定的参数，我无法弄清楚可以/应该替换什么。

sub_ids = ["2ypash", "7ocvlb", "7okxkf"]
for sub_id in sub_ids:
    submission = reddit.submission(id=sub_id)
    submission.comments.replace_more(limit=None, threshold=0)
comments = submission.comments.list()
commentlist = []
for comment in comments:
    commentsdata = {}
    commentsdata["id"] = comment.id
    commentsdata["subreddit"] = str(submission.subreddit)
    commentsdata["thread"] = str(submission.title)
    commentsdata["author"] = str(comment.author)
    commentsdata["body"] = str(comment.body)
    commentsdata["score"] = comment.score
    commentsdata["created_utc"] = datetime.datetime.fromtimestamp(comment.created_utc)
    commentsdata["parent_id"] = comment.parent_id
    commentlist.append(commentsdata)

Answer 1

缩

进是你的失败。 代码失败的原因是comments仅在sub_ids完成循环后分配。 所以当你遍历comments时，它们只是最后一个sub_id comments。

首先，在两个for循环之前将commentlist = []移出(使其紧跟在第 1 行之后(

其次，从comments = submission.comments.list()(含(开始的所有内容都需要缩进，以便在sub_ids迭代中运行。

这是它最终应该的样子：

sub_ids = ["2ypash", "7ocvlb", "7okxkf"]
commentlist = []
for sub_id in sub_ids:
    submission = reddit.submission(id=sub_id)
    submission.comments.replace_more(limit=None, threshold=0)
    comments = submission.comments.list()
    for comment in comments:
        commentsdata = {}
        commentsdata["id"] = comment.id
        commentsdata["subreddit"] = str(submission.subreddit)
        commentsdata["thread"] = str(submission.title)
        commentsdata["author"] = str(comment.author)
        commentsdata["body"] = str(comment.body)
        commentsdata["score"] = comment.score
        commentsdata["created_utc"] = datetime.datetime.fromtimestamp(comment.created_utc)
        commentsdata["parent_id"] = comment.parent_id
        commentlist.append(commentsdata)