December 2015
Beginner to intermediate
202 pages
4h
English
Content preview from Python Business Intelligence CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Retrieving a single record using PyMongo
Retrieving a single record is a common operation in any system with the CRUD (Create Read Update Delete) functionality.
Getting ready
PyMongo has a method that allows us to easily query a single record using zero or more criteria: find_one().
How to do it…
from pymongo import MongoClient
client = MongoClient('localhost', 27017)
db = client.pythonbicookbook
accidents = db.accidents
# Find the first document in the collection
accidents.find_one()
# Find the first document in the collection where the accident happened on a Sunday
accidents.find_one({"Day_of_Week": 1})How it works…
The find_one() method returns a single document—the first one it finds—based on the criteria provided. If there are multiple records ...
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