如何使用 insert_many 安全地忽略重复的键错误 [英] How to Ignore Duplicate Key Errors Safely Using insert_many

问题描述

在 pymongo 中使用 insert_many 时，我需要忽略重复插入，其中重复基于索引.我在 stackoverflow 上看到过这个问题，但我还没有看到有用的答案.

I need to ignore duplicate inserts when using insert_many with pymongo, where the duplicates are based on the index. I've seen this question asked on stackoverflow, but I haven't seen a useful answer.

这是我的代码片段:

try:
    results = mongo_connection[db][collection].insert_many(documents, ordered=False, bypass_document_validation=True)
except pymongo.errors.BulkWriteError as e:
    logger.error(e)

我希望 insert_many 忽略重复项而不抛出异常(这会填满我的错误日志).或者，是否有我可以使用的单独异常处理程序，以便我可以忽略错误.我想念w=0"...

I would like the insert_many to ignore duplicates and not throw an exception (which fills up my error logs). Alternatively, is there a separate exception handler I could use, so that I can just ignore the errors. I miss "w=0"...

谢谢

推荐答案

正确的解决方案是使用 w=0 的 WriteConcern:

The correct solution is to use a WriteConcern with w=0:

import pymongo
from pymongo.write_concern import WriteConcern


mongodb_connection[db][collection].with_options(write_concern=WriteConcern(w=0)).insert_many(messages)

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