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nmongo

MongoDB 3.x client for CPython and MicroPython.

It has mongo shell like APIs.

Support platform

Support database

  • MongoDB 3.2, 3.4, 3.6
  • Azure CosmosDB (MongoDB API)

Install

CPython

$ python3 -m pip install nmongo

MicroPython

if you use MicroPython patch datetime.py

$ micropython -m upip install micropython-time micropython-datetime
$ patch --directory=$HOME/.micropython/lib < tzinfo.patch
$ micropython -m upip install nmongo

Example

Connect to Database

>>> import nmongo
>>> db = nmongo.connect('servername', 'somewhatdatabase')
>>>

SSL connection

>>> import nmongo
>>> db = nmongo.connect('servername', 'somewhatdatabase', use_ssl=True)
>>>

or

>>> import nmongo
>>> db = nmongo.connect('servername', 'somewhatdatabase', use_ssl=True, ssl_ca_certs='/path/to/something-cert.crt)
>>>

User Authentication

>>> import nmongo
>>> db = nmongo.connect('servername', 'somewhatdatabase', user='user', password='password')
>>>

Connect to Azure CosmosDB (MongoDB API)

>>> import nmongo
>>> db = nmongo.connect('xxx.mongo.cosmos.azure.com', 'somewhatdatabase', user='xxx', password='password', port=10255, use_ssl=True)
>>>

Create

>>> db.fruits.insert({'name': 'apple', 'price': 200})
1
>>> db.fruits.insert([{'name': 'orange', 'price': 100}, {'name': 'banana', 'price': 50}])
2
>>> db.fruits.count()
3
>>>

Read

>>> cur = db.fruits.find({'name': 'banana'})
>>> cur.fetchone()
{'price': 50, '_id': ObjectId("5826b2313d28909ce9f6ea63"), 'name': 'banana'}
>>> cur = db.fruits.find()
>>> cur.fetchall()
[{'price': 200, '_id': ObjectId("5826b2273d28909ce9f6ea61"), 'name': 'apple'}, {'price': 100, '_id': ObjectId("5826b2313d28909ce9f6ea62"), 'name': 'orange'}, {'price': 50, '_id': ObjectId("5826b2313d28909ce9f6ea63"), 'name': 'banana'}]
>>>

Update

>>> db.fruits.update({'name': 'banana'}, {'$inc': {'price': 20}})
{'nModified': 1, 'ok': 1, 'n': 1}
>>> cur = db.fruits.find({'name': 'banana'})
>>> cur.fetchone()
{'_id': ObjectId("5823dd6d3d28909ce9f6e99c"), 'name': 'banana', 'price': 70}
>>>

Delete

>>> db.fruits.remove({'name': 'banana'})
1
>>> db.fruits.count()
2

Count each collection records

>>> for collection in db.getCollections():
...     print(collection.name, collection.count())
...
fruits 3
>>> db.getCollection('fruits').count()
3
>>>

See also mongo Shell Methods (Collection and Database sections).

Features Not Implemented

  • GridFS

About

Yet another MongoDB 3.x driver

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