PyMongo 集合對象不可調用

Question

我正在嘗試創建一個 Reddit 抓取工具，它從 Reddit 主頁獲取前 100 頁並將它們存儲到 MongoDB 中。 我不斷收到錯誤：

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.

這是我的代碼

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

insert_one()直到 3.0 版才被添加到 pymongo。 如果您嘗試在之前的版本上調用它，您將看到您看到的錯誤。

要檢查您的 pymongo 版本，請打開一個 python 解釋器並輸入：

import pymongo
pymongo.version

使用 pymongo 插入文檔的傳統方式只是使用Collection.insert() 。 因此，在您的情況下，您可以將插入行更改為：

threads.insert(data)

有關更多信息，請參閱pymongo 2.8 文檔