Book Image

Python Business Intelligence Cookbook

Book Image

Python Business Intelligence Cookbook

Overview of this book

The amount of data produced by businesses and devices is going nowhere but up. In this scenario, the major advantage of Python is that it's a general-purpose language and gives you a lot of flexibility in data structures. Python is an excellent tool for more specialized analysis tasks, and is powered with related libraries to process data streams, to visualize datasets, and to carry out scientific calculations. Using Python for business intelligence (BI) can help you solve tricky problems in one go. Rather than spending day after day scouring Internet forums for “how-to” information, here you’ll find more than 60 recipes that take you through the entire process of creating actionable intelligence from your raw data, no matter what shape or form it’s in. Within the first 30 minutes of opening this book, you’ll learn how to use the latest in Python and NoSQL databases to glean insights from data just waiting to be exploited. We’ll begin with a quick-fire introduction to Python for BI and show you what problems Python solves. From there, we move on to working with a predefined data set to extract data as per business requirements, using the Pandas library and MongoDB as our storage engine. Next, we will analyze data and perform transformations for BI with Python. Through this, you will gather insightful data that will help you make informed decisions for your business. The final part of the book will show you the most important task of BI—visualizing data by building stunning dashboards using Matplotlib, PyTables, and iPython Notebook.
Table of Contents (12 chapters)
Python Business Intelligence Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Updating a single record using PyMongo


A common operation in every application is that of updating a single record. For that, we'll use find_one_and_update() provided by PyMongo.

Getting ready

The find_one_and_update() method requires a filter to determine the record to be updated.

How to do it…

The following code tells us how to update a single record using PyMongo:

# Find the record you want to update and save the ID
from pymongo import MongoClient
client = MongoClient('localhost', 27017)
db = client.pythonbicookbook
customers = db.customers
customers.find_one_and_update(
    {"first_name": "Bob", "last_name": "Smith"},
    {'$set': {'contacted': False,
 'updated_at': datetime.datetime.utcnow()}})

How it works…

The first thing we do is create a filter for the update. In this recipe, we look for a record where the first_name field is Bob and the last_name field is Smith. Next, we tell PyMongo about the update operation that is to be applied. Here, we're telling PyMongo to set contacted to False...