Pymongo duplicatekeyerror. py", line 11, in mai.


  1. Pymongo duplicatekeyerror. Jul 12, 2024 · Discover effective strategies to resolve the MongoDB 'E11000 duplicate key error collection'. This example describes using Motor with Tornado. Tutorial ¶ This tutorial is intended as an introduction to working with MongoDB and PyMongo. 尝试在唯一索引字段上插入重复的值； 2. DuplicateKeyError: E11000 duplicate key error index: database. nrse. Actually, as im wrting this and checked the documentation, and the above appears to be true. Sep 29, 2020 · Hi @frankie567 Sometimes in a "production" application using fastapi-user (with Gunicorn and uvicorn and concurrency), I have this error I'm not unable to reproduce Feb 6, 2024 · PyMongo provides a straightforward and efficient way to work with MongoDB from Python. 连接mongodb conn = pymongo. However, I do not have a May 15, 2025 · 文章浏览阅读3. emails. 5 Motor can also integrate with asyncio instead of Tornado. org Mar 18, 2016 · @ORA600 Just to make the distinction clear, using "upserts" ( even with bulk operations, and still the old interface for current pymongo ) means that you are still "looking up" the data prior to deciding whether to "insert" or not. In fact, insert_one doesn't cause the error but the inserted_id causes the duplicate error. Sync and Async ODM (Object Document Mapper) for MongoDB based on python type hints - odmantic/odmantic/engine. If user does exist, do not insert it. Feb 28, 2019 · I have read that when I use pymongo's upsert and when I don't supply the "_id", the upsert will try to generate a new Id, and that will cause the operation to fail. I set everything up and used a simple tutorial to start with basic things in pymongo. aesc. Raised when an insert or update fails due to a duplicate key error. Beginning in version 0. pymongo 插入捕获重复键 简介 在使用 MongoDB 进行数据插入操作时，有可能会遇到重复插入相同的键的情况。 为了避免这种情况发生，我们可以通过捕获重复键的方式来处理。 Discover how to fix the `pymongo. pymongo async – Async Python driver for MongoDB AsyncMongoClient change_stream – Watch changes on a collection, database, or cluster AsyncChangeStream AsyncClusterChangeStream AsyncCollectionChangeStream AsyncDatabaseChangeStream client_session – Logical sessions for sequential operations Causally Consistent Reads Transactions Snapshot Reads Classes AsyncClientSession SessionOptions Mar 3, 2025 · MongoDB 是現今最流行的 NoSQL 資料庫之一，而 PyMongo 則是 Python 連接 MongoDB 的首選工具。 如果你是一位剛開始接觸 MongoDB 與 Python 的開發者，這篇文章將帶你一步步了解 PyMongo，並教你如何在實際專案中使用它。 Subject: [mongodb-user] PyMongo DuplicateKeyErrors after upgrade to MongoDB 2. insert_many(dataset, ordered=False) except: err = filter( Apr 6, 2016 · Get id's who caused DuplicateKeyError in pymongo Asked 8 years, 8 months ago Modified 7 years, 5 months ago Viewed 2k times May 9, 2024 · In this MongoDB article, we will discuss what the E11000 duplicate key error index is, how it may arise, and how to resolve it. In order to do that, I create a list of InsertOne function. I try running InsertMany() with Ordered: false in order to ignore duplicate key errors (I use a unique index for a specific field which should be unique) and keep on inserting all the other documents. Flask web applications and MongoDB Atlas’s document model make application development simple and robust. But this command results Duplicate Key I am trying to insert some documents into a collection and I get a duplicate key error, I have checked the documents that I am inserting multiple times, and removing the key seems to enable the insert to happen. I ended up writting this into a python file: from Steps to Insert a Document into MongoDB Using Python Install PyMongo (if not already installed): pip install pymongo Connect to MongoDB, access the database, and insert documents into a collection. MongoDB: A document-based NoSQL database. get ("errmsg"), 11000, error) pymongo. May be it was created before, may be it was created by somebody else. $email_1 dup key: { : "mail@example. Understanding MongoDB’s Sep 5, 2018 · I'm trying to save objects to mongodb using pymongo. After removing that statement, it passed all the tests. DuplicateKeyError: print 'Duplicate url %s' % doc Where collection is an instance of a collection created from your connection/database instances and docs is the array of dictionaries (documents) you would currently be passing to insert. python version = 3. insert_many (dataset, ordered=False) except: err = filter (lambda x: x ['code'] != 11000, e. DuplicateKeyError:E11000 解决方案 原创 最新推荐文章于 2025-05-15 08:38:50 发布 · 452 阅读 Tutorial ¶ This tutorial is intended as an introduction to working with MongoDB and PyMongo. Prerequisites ¶ Before we start, make sure that you have the PyMongo distribution installed. insert Apr 15, 2017 · I have noticed a strange behaviour of the pymongo library. 7. However, I do not have a I’m getting the Duplicate key error collection message. bulk_write() method. errors. Jun 27, 2020 · MongoDB报错：E11000 duplicate key error collection 最近在学习利用node的练习做一个博客系统，在使用MongoDB中在新增用户的时候发现 Dec 31, 2019 · Scrapy Mongodb duplicate key error E11000 pymongo. 遇到的坑-pymongo报错：DuplicateKeyError: E11000 duplicate key error collection，代码先锋网，一个为软件开发程序员提供代码片段和技术 Mar 11, 2016 · I've been building a python library that interacts heavily with MongoDB via pymongo. Terminology Collection: Similar to SQL tables. I assumed, it would be a good idea, to make that unique in the DB, so I created a unique index on my match string field. The following are 30 code examples of pymongo. db import models from mongoengine import * class Employee(Document): May 15, 2025 · pymongo. Feb 27, 2025 · Fix: We needed to use dynamically generated values instead of hardcoded ones. This is my code: #!/usr/bin/env python # Python code to illustrate # inserting data in MongoDB from pymongo import MongoC While I'm testing a model which has unique index field, I've wanted to catch DuplicateKeyError from pymongo but during handling the error beanie raised RevisionIdWasChanged. You can also set a write concern for the operation when using the MongoClient. DuplicateKeyError: E11000 Asked 5 years, 1 month ago Modified 5 years, 1 month ago Viewed 898 times We would like to show you a description here but the site won’t allow us. Executing write operations in batches reduces the number of network round trips, increasing write throughput. com",27018) 如果数据库有密码需要先使用admin进行权限认证 db = Sep 4, 2024 · Learn how to create Airflow MongoDB connection to automate your API data transfer efficiently. I have no issues with the first object, but when trying to save a second object I get pymongo. Now, I upgraded to Sep 1, 2018 · 文章浏览阅读1w次，点赞6次，收藏9次。本文介绍了一种在使用Scrapy向MongoDB存入数据时遇到的_id重复错误，并提供了有效的解决方案。错误出现的原因在于创建字典时位置不当，导致每次循环都传递相同的字典对象给MongoDB。 Use specific exceptions only; you can use one except statement to catch multiple exception types: except (AttributeError, pymongo. 0 Docu Jan 21, 2013 · Pymongo was doing fine for weeks until I ran into the following error: Traceback (most recent call last): File "main. 9 project and am using mongoengine to connect to mongodb instance. build #38: E pymongo 这个错误通常表示您正在尝试将一个具有重复键值的文档插入到一个具有唯一索引的MongoDB集合中。在您的情况下，看起来是您正在尝试使用相同的“h_id”值向“wormhole. I am not providing a "_id" in the insertion, assuming MongoDB should automatically create the _id field. 4. details ['writeErrors']) if len (err) > 0: raise The code above was successfully ignoring the errors about duplicate keys, which is what I wanted. Raised when creating a collection with encrypted_fields fails. Explore and learn how to create Flask applications with PyMongo and MongoDB Atlas. The Issue: The first entry of the information is successful, however, any consecutive entries ar 这个错误通常出现在以下情况下： 1. 尝试使用_upsert选项进行更新操作时，更新的新值与集合中已存在的值相同。 接下来，我们将介绍几种解决这个错误的方法。 删除重复数据 最简单的解决方法是删除集合中的重复数据。可以使用MongoDB的 deleteMany() 方法来 Sep 13, 2019 · I want to check if the user exists. Step-by-step guide for seamless integration. 9, when supplying invalid arguments the constructor of Cursor, there will be a This tutorial explains how to take advantage of Motor’s bulk write operation features. Feb 27, 2019 · 连接mongodb 导入包 import pymongo,urllib import sys from datetime import timedelta import os import uuid 使用pymongo可以快速的处理与mongodb的事物 2. insert(doc) except pymongo. 在上面的例子中，我们创建了一个名为 mycollection 的集合，并在 name 字段上创建了唯一索引。然后，我们尝试插入两条具有相同 name 值的记录，这将导致DuplicateKeyError的抛出。在这种情况下，我们通过捕获DuplicateKeyError来处理插入操作失败的情况。 如何处理DuplicateKeyError？ 处理DuplicateKeyError需要采取 Read the Docs is a documentation publishing and hosting platform for technical documentation. Limit the exception handler to just those parts of the code where the exception can be thrown. If you want to learn how to connect and use MongoDB from your Python application, you've come to the right place. Document Stores: Data stored in JSON-like documents. Our system was designed to handle asynchronous event processing, meaning that multiple requests could arrive May 9, 2024 · In this MongoDB article, we will discuss what the E11000 duplicate key error index is, how it may arise, and how to resolve it. com" } I have been looking around on the internet for a solution both in python but also in other languages. DuplicateKeyError (). OperationFailure): or you can use multiple except statements handle different exceptions in different ways. pymongo中文教程. Tests fail on Travis Ubuntu Precise and Trusty-beta using the apt whitelisted mongo-org-server 3. Feb 8, 2024 · While working with MongoDB through PyMongo, encountering an E11000 duplicate key error during an upsert operation is a common issue that perplexes many developers. py 176-366 Error Details OperationFailure and its subclasses provide additional information about the error: Dec 7, 2023 · MongoDB is growing to be a popular name among Python developers and offices as one of the most well-liked NoSQL databases. py", line 14, in main() File "main. Jul 3, 2018 · I use pymongo to connect to my databases on a mongodb server. coll. When PyMongo runs a bulk operation, it uses the write_concern of the collection or client on which the operation is running. May 4, 2025 · DuplicateKeyError - Raised when an insert or update fails due to a duplicate key BulkWriteError - Exception for bulk write errors ClientBulkWriteException - Exception for client-level bulk write errors Sources: pymongo/errors. DuplicateKeyError examples, based on popular ways it is used in public projects. 0 with a duplicate key error, e. In the Python shell, the following should run without raising an exception: May 25, 2020 · Here I am using update_one() by pymongo with upsert=True. g. The application will be able to create, read, update, and delete documents in Feb 22, 2018 · Since I'm here, for future users, it's looks like DuplicateKeyError refer to _id field ("primary key" already exists), while NotUniqueError refer to a unique index rule. Also, why can't you just access the db using the key you were intending to use originally? the DuplicateKeyError means that key is the same, so you already have the key, then you can just access it's value. Feb 18, 2024 · When working with large datasets in MongoDB, it is crucial to ensure efficient insertion of data to avoid duplicate entries. Learn effective strategies to handle and prevent duplicate key errors in MongoDB, ensuring data integrity and smooth database operations with expert troubleshooting techniques. In this guide, you can learn how to use PyMongo to add documents to a MongoDB collection by performing insert operations. DuplicateKeyError: E11000 duplicate key error collection: May 1, 2012 · for doc in docs: try: collection. Future operations will attempt to open a new connection to the database (and will continue to raise this exception until the first successful connection is made). DuplicateKeyError: print 'caught DuplicateKeyError' Jul 29, 2025 · Learn how to seamlessly integrate MongoDB with Flask using a practical approach. Whenever your application attempts to insert a document, if one already exists with the same identifier, PyMongo will raise DuplicateKeyError: try: the_collection. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. MongoDB 如何使用PyMongo在重复键错误后继续插入 在本文中，我们将介绍如何使用PyMongo在MongoDB出现重复键错误后仍然能够继续插入数据。 阅读更多：MongoDB 教程 了解MongoDB的重复键错误 在MongoDB中，每条数据都有一个唯一的键，通常是'_id'字段。当我们尝试插入一条数据时，如果该数据的键与已有数据的 Encountered pit-pymongo error: DuplicateKeyError: E11000 duplicate key error collection, Programmer Sought, the best programmer technical posts sharing site. Contribute to mongodb/mongo-python-driver development by creating an account on GitHub. Duplicate entries can lead to data inconsistencies and negatively impact the performance of your application. That means that the first time through the loop _id is added by the insert method. py", line 11, in mai Aug 7, 2018 · I was using PyMongo without any transaction and sessions before and was inserting documents successfully as: try: _ = db[collection]. May 27, 2025 · PyMongo: Install via pip (pip install pymongo) MongoDB Compass: Download Compass 2. To resolve this issue either upgrade your database to version >= 4. $timestamp_1 dup key: { : 1385290560000000000 } I am confused as to why dropDups=True is not working. Step-by-step guide for building scalable web applications. I am not familiar with Mongoose but I think that if the index already exists and a field goes from unique to non-unique, the index is not updated or removed. In this PyMongo tutorial, we'll build a simple CRUD (Create, Read, Update, Delete) application using FastAPI and MongoDB Atlas. I am trying to insert a pretty simple document into a collection. 1 and we're now seeing a lot of DuplicateKeyError: DuplicateKeyError: E11000 duplicate key error index:summify_news_queue. And if the data was important just removing the index that is not updated or deleted Mar 24, 2020 · [SOLUTION] It seems that, although my delete_comment () function was passing the delete_comment tests, it was still causing errors in the create_update_comments test because of an upstart=True line I had added. The E11000 duplicate key 在本文中，我们介绍了如何处理MongoDB（pyMongo）中的DuplicateKeyError。 我们了解了重复键错误的概念并展示了如何使用try-except语句来捕捉和处理这个错误。 Feb 23, 2022 · DuplicateKeyError (error. Contribute to jahnavikannuru/Job-Questor-project development by creating an account on GitHub. MongoClient ("sv6. Apr 15, 2016 · pymongo. 0 or downgrade to an early version of PyMongo which supports MongoDB < 4. pymongo async – Async Python driver for MongoDB AsyncMongoClient change_stream – Watch changes on a collection, database, or cluster AsyncChangeStream AsyncClusterChangeStream AsyncCollectionChangeStream AsyncDatabaseChangeStream client_session – Logical sessions for sequential operations Causally Consistent Reads Transactions Snapshot Reads Classes AsyncClientSession SessionOptions 本文将详细介绍如何使用 PyMongo 处理这种场景并继续后续的插入操作。 关键结论：通过捕获 DuplicateKeyError 异常并结合 insert_many() 的 ordered=False 参数，可以实现跳过重复文档继续插入的功能。 Aug 19, 2022 · 回答问题 谁能告诉我如何在 MongoDB 中处理 DuplicateKeyError ? 我正在编写一个 python 脚本,我将几个文档从两个不同的集合移动到第三个集合中。 Mar 31, 2020 · 在通过pymongo读取数据库内容并改写的时候遇到一个报错pymongo. index. insert(document) except pymongo. Why? What is it about MongoDB? MongoDB is one of the most flexible and Sep 3, 2020 · Thanks for the reply! I didn't insert the post again. An insert operation inserts one or more documents into a MongoDB collection. I have a model as follows: from django. In this article, we will explore strategies to efficiently insert data into MongoDB using Python 3 while avoiding duplicate entries. How do I generally prevent duplicates? How do I config it for a specific attribute lik Nov 24, 2013 · DuplicateKeyError: E11000 duplicate key error index: myDb. "- document: The document to BUG: pymongo. I have a database with custom ids and I only want to insert a new record if the id is different from the other ids. 8k次。本文介绍了在使用Pymongo操作MongoDB时遇到DuplicateKeyError的错误原因，即尝试插入已存在的主键值。文章通过示例展示了错误的重现，并提出了两种解决方案：一是使用关键字覆盖保存，二是利用特定语句避免冲突。 Aug 1, 2023 · If you’re working with MongoDB, you might come across an error called “MongoError: E11000 duplicate key error collection. The expected result is it should merge if the entry already exists. Technical Background Core Concepts NoSQL: Stores data in non-tabular formats, offering flexibility. 6w次，点赞7次，收藏16次。本文探讨了MongoDB中ID重复的常见问题及其解决方案。分析了ID重复的内外部原因，介绍了如何通过手动指定ID避免自动生成ID带来的冲突，以及使用sparse索引过滤null值以避免重复键错误。 Jun 30, 2017 · I need to ignore duplicate inserts when using insert_many with pymongo, where the duplicates are based on the index. Jun 20, 2016 · I have a django 1. Could anybody please tell me how to handle DuplicateKeyError in MongoDB? I am writing a python script, where I move several docs from two different collections into a third one. Whether you’re inserting a single document, multiple documents, or dealing with complex data structures, retrieving the ID of inserted documents is a simple process. ” This error… I am using pymongo "insert_one", I want to prevent insertion of two documents with the same "name" attribute. Sep 14, 2020 · I am trying to insert a great number of document(+1M) using a bulk_write instruction. 4 pymongo version = 3. DuplicateKeyError: E11000 duplicate key error` in your Django and MongoDB application using Djongo by correctly defining the `_id` field in your models I was using PyMongo without any transaction and sessions before and was inserting documents successfully as: try: _ = db [collection]. The encrypted_fields document that allows inferring which data keys are known to be created. 8. Is this true? and how do I upsert Aug 8, 2025 · 文章浏览阅读3. pymongo async – Async Python driver for MongoDB AsyncMongoClient change_stream – Watch changes on a collection, database, or cluster AsyncChangeStream AsyncClusterChangeStream AsyncCollectionChangeStream AsyncDatabaseChangeStream client_session – Logical sessions for sequential operations Causally Consistent Reads Transactions Snapshot Reads Classes AsyncClientSession SessionOptions Feb 11, 2014 · Create a unique index on the field that must be unique. DuplicateKeyError: E11000 duplicate key error collection: 网上找的copy ()、删什么id键的都不适用，我是这么处理的 Hello, I’m working with a match-string to make sure, that I avoid duplicates. $_id_ dup key: { : ObjectId ('4e72d6502ed7af0e8a002b84')} pymongo - Documentation On this page What is PyMongo? Setting up PyMongo Connecting to MongoDB Example: Basic Connection and Database Interaction Working with Databases and Collections Creating Databases Listing Databases Dropping Databases Accessing Collections Creating Collections Listing Collections Dropping Collections Example: Database and Collection Management Document Manipulation Feb 3, 2019 · Within a plotly-dash application, I am entering some user-specified data into a mongoDB database. This is caused by the driver being too new for the server it is being run against. { "ldhName": "exampleone. myCollection. DuplicateKeyError But even in this case, the new data is not entered in the collection of mongo. DuplicateKeyError: Causes and solutions for E11000 duplicate key error collection, Programmer Sought, the best programmer technical posts sharing Nov 3, 2016 · Edit: Ok, the error is pymongo. It works perfectly fine (in the happy flow 🙂), however I’m not sure it . The E11000 duplicate key error index is an error that occurs when we try to insert a document into a MongoDB collection with a unique index, and the index already contains a document with the same value for the unique key. I’m getting the Duplicate key error collection message. In the Python shell, the following should run without raising an exception: Jun 19, 2025 · Learn how to build robust web applications with Flask and MongoDB. 0 and PyMongo 2. Here is two examples of the document I am trying to insert, with the unique key index on ldhName unless I’m mistaking somthing, the key would be unique. Bulk Insert ¶ A batch of documents can be inserted by passing a This is the complete list of members for pymongo::errors::DuplicateKeyError, including all inherited members. As far as I know this issue is because there is a duplicate key in the collection. The driver reports all write concern errors after attempting all operations, regardless of execution order. news_queue. py at master · art049/odmantic PyMongo - the Official MongoDB Python driver. I've seen this question asked on stackoverflow, but I haven't seen a useful answ In order to auto-reconnect you must handle this exception, recognizing that the operation which caused it has not necessarily succeeded. Since doc is defined outside the loop, each subsequent pass through the loop uses the same value for _id. This comprehensive guide covers setup, integration, tips, and best practices. Contribute to nummy/pymongo-tutorial-cn development by creating an account on GitHub. If the id exists I don't want to update the value (so I think upsert isn't a solu Jan 17, 2022 · I have created a new Mongo collection to a new project, but when I try to create a new user, I get the following error: MongoError: E11000 duplicate key error motor - Asyncio Driver for MongoDB Start See MongoDB Overview - Linux Cookbook and MongoDB on Ubuntu - Linux Cookbook. ‘Cursor’ object has no attribute ‘_Cursor__killed’ ¶ On versions of PyMongo <3. Dec 5, 2013 · That is a totally valid concern (you should explain this in your question). This blog covers real-world scenarios from bulk writes to schema design Sep 18, 2023 · Hey everyone 🙂 I’m using Golang’s MongoDB driver and I’m facing an issue I would love getting assistance with. To help you get started, we've selected a few pymongo. DuplicateKeyError: E11000 duplicate key error Dec 5, 2013 · In pymongo, when a DuplicateKeyError caught, what's the proper way to find out the duplicate value behind the the exception? Currently I do this try: db. hole_status_info”集合中插入文档。 解决此错误的方法是确保您将唯一索引设置为防止插入重复键值。您可以尝试使用Mongo shell或MongoDB Hey all, I feel like this is probably a stupid problem I am overlooking, but could use your help. If the data was not important you could have simply drop the collection. You can perform an insert operation by using the insert_one() or insert_many() method. 0 We just upgraded to MongoDB 2. Now, for data loads… Jun 21, 2017 · The problem is that PyMongo injects an _id field into the document, if the _id field does not exist, before inserting it (_id is always generated client side with 10gen drivers). Added in version 4. When I run the following code from my unit test, everything is ok (the 2 documents are stored in their collection and the _id is set). PyMongo is the official MongoDB driver for synchronous Python applications. 0. 1ltvk difx mhbgr cyue lqx ukr zx9 vx 1op edar