MongoDB - Python - Reading and Writing to MongoDB with Python(Inserting a Document into a Collection)

MongoDB and Python

開発環境

• OS X El Capitan - Apple (OS)
• Emacs (Text Editor)
• Python 3.5 (プログラミング言語)
• MongoDB (NoSQL, データベース)

MongoDB and Python: Patterns and processes for the popular document-oriented database (Niall O'Higgins (著)、 O'Reilly Media)のChapter 2.(Reading and Writing to MongoDB with Python)の Inserting a Document into a Collection を Python 2.7 ではなく Python 3.5 で取り組んでみる。(2.7と3では、pymongo module が少し変わったみたい。)

コード(Emacs)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys

import datetime
from pymongo import MongoClient
from pymongo.errors import ConnectionFailure


def main():
    try:
        c = MongoClient(host="localhost", port=27017)
        print('Connected successfully')
    except ConnectionFailure as err:
        print('Could not connect to MongoDB: {0}'.format(err), file=sys.stderr)
        sys.exit(1)

    dbh = c['mydb']
    assert dbh.client == c
    user_doc = dict(
        username='janedoe',
        firstname='Jane',
        surname='Doe',
        dateofbirth=datetime.datetime(1974, 4, 12),
        email='janedoe74@example.com',
        score=0
    )
    dbh.users.insert(user_doc)
    print('Successfully inserted document: {0}'.format(user_doc))

if __name__ == '__main__':
    main()

入出力結果(Terminal, IPython)

$ ./sample2.py
Connected successfully
Successfully inserted document: {'email': 'janedoe74@example.com', 'dateofbirth': datetime.datetime(1974, 4, 12, 0, 0), 'score': 0, 'username': 'janedoe', 'surname': 'Doe', 'firstname': 'Jane', '_id': ObjectId('57946f2aa54d75164f103be7')}
$