Python MongoDB - distinct() Last Updated : 04 Jul, 2025 Comments Improve Suggest changes Like Article Like Report distinct() method in MongoDB is used to retrieve all unique values for a specified field from a collection. In Python, you can use this method with PyMongo to filter out duplicates and get a list of distinct values across documents. This is helpful when you want to find all unique fields without repeating values.Syntax collection.distinct(key, filter=None)Parameters : key (string): field name for which you want to find distinct values.filter (optional, dict): a query to filter which documents to consider when finding distinct values.Let's create a sample collection: python from pymongo import MongoClient client = MongoClient("mongodb://localhost:27017/") mydb = client['database'] mycollection = mydb['myTable'] # Insert sample documents documents = [ {"_id": 1, "dept": "A", "item": {"code": "012", "color": "red"}, "sizes": ["S", "L"]}, {"_id": 2, "dept": "A", "item": {"code": "012", "color": "blue"}, "sizes": ["M", "S"]}, {"_id": 3, "dept": "B", "item": {"code": "101", "color": "blue"}, "sizes": "L"}, {"_id": 4, "dept": "A", "item": {"code": "679", "color": "black"}, "sizes": ["M"]} ] mycollection.insert_many(documents) # Print inserted documents print("Inserted Documents:\n") for doc in mycollection.find(): print(doc) Output Snapshot of Terminal showing Collection createdExample:In this Example, distinct() method is used to return unique values of different fields from the collection. Python # 1. Return distinct values for the 'dept' field print(mycollection.distinct('dept')) # 2. Return distinct values for the embedded field 'item.color' print(mycollection.distinct('item.color')) # 3. Return distinct values for the array field 'sizes' print(mycollection.distinct("sizes")) # 4. Return distinct 'item.code' where 'dept' is 'B' print(mycollection.distinct("item.code", {"dept": "B"})) OutputSnapshot of Terminal showing Output of Distinct methodRelated Article:MongoDB QueryMongoDB IntroductionConnection of MongoDB and Pythoninsert_many() methods Comment More info G gauravbabbar25 Follow Improve Article Tags : Python Python-mongoDB Explore Python FundamentalsPython Introduction 3 min read Input and Output in Python 4 min read Python Variables 5 min read Python Operators 5 min read Python Keywords 2 min read Python Data Types 7 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 6 min read Python Functions 5 min read Recursion in Python 4 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 4 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 12 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 6 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library- Tutorial 4 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 7 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 7 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 3 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like