Question

在我的mongodb中，我有大约2万条记录，现在我从同一个mongodb中仅以python导入500条记录，现在我需要删除已导入的那500条记录，是否可以使用python删除那500条记录？

我的导入500条记录的代码

from pymongo import MongoClient
con = MongoClient(local host, 27017)
db = con.rssfeeds_db
data = pd.DataFrame(list(db.restdata.find().limit(500)))

Answer 1

您需要为每个记录使用_id，以便您可以告诉pymongo删除哪些记录。例如：

from pymongo import MongoClient
con = MongoClient(localhost, 27017)
db = con.rssfeeds_db

// create a list of the records. each one will be a dict.
records = [x for x in db.restdata.find().limit(500)]

// create a list of the 500 ids so we only need to call the db once
record_ids = [record['_id'] for record in records]

//create your dataframe
data = pd.DataFrame(records)

// delete all 500 records at once
db.restdata.delete_many(
    {'_id': 
        {'$in': record_ids}
    },
)

如何使用python在mongo db中删除数据

1 个答案: