MongoDB with PyMongo

Installation

pip install pymongo

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Connection

Basic Connection

from pymongo import MongoClient

# Connection string format
client = MongoClient('mongodb://<username>:<password>@<ip>:<port>/<database>?authSource=<database>')

# Get database
db = client['db_name']

# List collections
db.collection_names()

Connection String Components

Component	Description
username	MongoDB username
password	User password
ip	Server IP or hostname
port	MongoDB port (default: 27017)
database	Target database name
authSource	Authentication database

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Basic Operations

Insert

# Insert one
db.collection.insert_one({"name": "John", "age": 30})

# Insert many
db.collection.insert_many([
    {"name": "Jane", "age": 25},
    {"name": "Bob", "age": 35}
])

Find

# Find one
doc = db.collection.find_one({"name": "John"})

# Find all
for doc in db.collection.find():
    print(doc)

# Find with filter
docs = db.collection.find({"age": {"$gt": 25}})

Update

# Update one
db.collection.update_one(
    {"name": "John"},
    {"$set": {"age": 31}}
)

# Update many
db.collection.update_many(
    {"age": {"$lt": 30}},
    {"$set": {"status": "young"}}
)

Delete

# Delete one
db.collection.delete_one({"name": "John"})

# Delete many
db.collection.delete_many({"age": {"$lt": 25}})

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Quick Reference

Operation	Method
Insert one	insert_one(doc)
Insert many	insert_many([docs])
Find one	find_one(filter)
Find all	find(filter)
Update one	update_one(filter, update)
Update many	update_many(filter, update)
Delete one	delete_one(filter)
Delete many	delete_many(filter)
Count	count_documents(filter)