Python MongoDB Why can't start local server?

Question

Python

I run the simplest code:

from pymongo import *
db = MongoClient()['db']
table = db['table']
table.save({1:'blabla'})

He thinks for a while and gives an error:
On MacOS this:

pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 61] Connection refused

On Linux like this:

pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

What is wrong and how to do it right?

Answer 1

To perform operations with the database, the MobgoDB server must be running.
For Linux:

lsof -i:27017
sudo apt-get install mongodb
sudo service mongodb start
tail -n200 /var/log/mongodb/mongodb.log

For macOS:

brew update
brew install mongodb
mkdir -p /data/db
sudo chmod -R 777 /data/db
mongod

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