Question

我正在尝试创建一个reddit scraper，它从reddit主页获取前100页并将它们存储到MongoDB中。这是我关于stackoverflow的第一篇文章，所以如果我的帖子格式不正确，我很抱歉。我一直收到错误：

TypeError: 'Collection' object is not callable. If you meant to call the 'insert_one' method on a 'Collection' object it is failing because no such method exists.

这是我的代码

import pymongo
import praw
import time


def main():
    fpid = os.fork()
    if fpid!=0:
        # Running as daemon now. PID is fpid
        sys.exit(0)

    user_agent = ("Python Scraper by djames v0.1")
    r = praw.Reddit(user_agent = user_agent)    #Reddit API requires user agent

    conn=pymongo.MongoClient()
    db = conn.reddit
    threads = db.threads


    while 1==1:    #Runs in an infinite loop, loop repeats every 30 seconds
        frontpage_pull = r.get_front_page(limit=100)    #get first 100 posts from reddit.com

        for posts in frontpage_pull:    #repeats for each of the 100 posts pulled
            data = {}
            data['title'] = posts.title
            data['text'] = posts.selftext
            threads.insert_one(data)
        time.sleep(30)

if __name__ == "__main__":
    main()

Answer 1

直到版本3.0，

insert_one()才被添加到pymongo。如果您尝试在之前的版本上调用它，您将收到您看到的错误。

要检查你的pymongo版本，打开一个python解释器并输入：

import pymongo
pymongo.version

使用pymongo插入文档的传统方法只有Collection.insert()。因此，在您的情况下，您可以将插入行更改为：

threads.insert(data)

有关详细信息，请参阅pymongo 2.8 documentation

PyMongo Collection对象不可调用

1 个答案: