mongodb_demo

// list databases
db;

//select database to use
use test;

// find existing collections
db.getCollectionNames();

//insert 1 document into a collection that doesn't exist
db.mycoll.insertOne({"name":"atharva"});

//read all documents
db.mycoll.find({});

db.mycoll.updateOne({"name":"atharva"},
    {"$set":{"team":"Data Engineering"}});
db.mycoll.find({});

db.mycoll.replaceOne({"name":"atharva"},
    {"name":"Atharva Inamdar"});
db.mycoll.find({});

db.mycoll.insertMany([{"name":"Tinu"},{"name":"Steve"},{"name":"Anton"}]);
db.mycoll.find({});

//delete 1 doc by id
db.mycoll.deleteOne({"_id":ObjectId("5f0978f5c9f1ef571c9577f2")});
db.mycoll.find({});

//delete all documents
db.mycoll.deleteMany({});

mongodb_demo.py

import pymongo
from bson import ObjectId

client = pymongo.MongoClient('localhost', 27017)

if __name__ == '__main__':
    print(client.list_database_names())

    test_db = client.get_database('test')

    print(test_db.list_collection_names())

    coll = test_db['pycoll']
    coll_cur = coll.find({})

    for doc in coll_cur:
        print(doc)

    # insert one document
    coll.insert_one({'name': 'atharva'})

    coll_cur = coll.find({})

    for doc in coll_cur:
        print(doc)

    coll.update_one({'_id':ObjectId('5f097f896bddf1691d73b9e1')},
                    {'$set':{'team': "Data Eng"}})
    print('update document:')
    coll_cur = coll.find({})

    for doc in coll_cur:
        print(doc)

    coll.delete_many({})
    print('delete all:')
    coll_cur = coll.find({})

    for doc in coll_cur:
        print(doc)

run_mongodb.sh

#!/usr/bin/env bash

# if you don’t have IDE:
docker run --name mongo-demo -d --rm mongo:4.2
docker exec -it mongo-demo bash

# To Exit:
quit();
exit

#stop the container:
docker stop mongo-demo
#If you have IDE: 
docker run –p 27017:27017 --name mongo-demo --rm -it mongo:4.2

# To Exit: Ctrl+C