Inserting documents

Introduction to MongoDB in Python

Filip Schouwenaars

Machine Learning Researcher

Why insert data?

Data needs to exist in your database
Need way to add it!
Two methods
- insert_one(): add single document
- insert_many(): add list of documents

Inserting a single document

from pymongo import MongoClient
client = MongoClient()
mov = client.film.movies


mov.count_documents({})

new_movie = {
    "title": "oppenheimer",
    "genre": ["drama", "history"],
    "release_year": 2023,
    "rating": 8.7
}

result = mov.insert_one(new_movie)

Unique _id is automatically generated!

result.inserted_id

ObjectId('6837575d10d855c9f6698341')

mov.count_documents({})

Inserting multiple documents

new_movies = [
    {
        "title": "the holdovers",
        "genre": ["comedy", "drama"],
        "release_year": 2023,
        "rating": 7.9
    },
    {
        "title": "past lives",
        "genre": ["drama", "romance"],
        "release_year": 2023,
        "rating": 7.8
    }
]

result = mov.insert_many(new_movies)
print(result.inserted_ids)

[ObjectId("662ecfe2e89c44eb19ae1234"),
 ObjectId("662ecfe2e89c44eb19ae1235")]

All _ids are auto-generated.

Let's practice!

Introduction to MongoDB in Python