How to dump a collection to json file using pymongo

Question

I am trying to dump a collection to .json file but after looking in pymongo tutorial I can not find any thing that relates to it.

Tutorial link: https://api.mongodb.com/python/current/tutorial.html

Answer 1

Just get all documents and save them to file e.g.:

from bson.json_util import dumps
from pymongo import MongoClient

if __name__ == '__main__':
    client = MongoClient()
    db = client.db_name
    collection = db.collection_name
    cursor = collection.find({})
    with open('collection.json', 'w') as file:
        file.write('[')
        for document in cursor:
            file.write(dumps(document))
            file.write(',')
        file.write(']')