Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)
  • Table Of Contents Toc
Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)

Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)

By : Nixon
3 (1)
Buy this Book
close
close
Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)

Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)

3 (1)
By: Nixon
Buy this Book

Overview of this book

The Raspberry Pi is one of the smallest and most affordable single board computers that has taken over the world of hobby electronics and programming, and the Python programming language makes this the perfect platform to start coding with. The book will start with a brief introduction to Raspberry Pi and Python. We will direct you to the official documentation that helps you set up your Raspberry Pi with the necessary equipment such as the monitor, keyboard, mouse, power supply, and so on. It will then dive right into the basics of Python programming. Later, it will focus on other Python tasks, for instance, interfacing with hardware, GUI programming, and more. Once you get well versed with the basic programming, the book will then teach you to develop Python/Raspberry Pi applications. By the end of this book, you will be able to develop Raspberry Pi applications with Python and will have good understanding of Python programming for Raspberry Pi.
Table of Contents (13 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. Your First Steps with Python on the Pi
Icon
1. Your First Steps with Python on the Pi
Icon
Installing and setting up Raspbian
Icon
The Python development tools
Icon
Running some simple Python scripts
Icon
Summary
2
2. Understanding Control Flow and Data Types
Icon
2. Understanding Control Flow and Data Types
Icon
Data in Python
Icon
Control flow operators
Icon
Using functions
Icon
Summary
3
3. Working with Data Structures and I/O
Icon
3. Working with Data Structures and I/O
Icon
Data structures
Icon
Input/output
Icon
Summary
4
4. Understanding Object-oriented Programming and Threading
Icon
4. Understanding Object-oriented Programming and Threading
Icon
Object-oriented programming
Icon
Classes in Python
Icon
Threading
Icon
Summary
5
5. Packaging Code with setuptools
Icon
5. Packaging Code with setuptools
Icon
Using packages in your Python code
Icon
Packaging your own Python modules
Icon
Summary
6
6. Accessing the GPIO Pins
Icon
6. Accessing the GPIO Pins
Icon
Digital electronics
Icon
The GPIO library
Icon
Universal Asynchronous Receiver/Transmitter (UART)
Icon
Additional libraries
Icon
Summary
7
7. Using the Camera Module
Icon
7. Using the Camera Module
Icon
Setting up the camera module
Icon
Installing and testing the Python library
Icon
Writing applications for the camera
Icon
Summary
8
8. Extracting Data from the Internet
chevron up
Icon
8. Extracting Data from the Internet
Icon
Using urllib2 to download data
Icon
Parsing JSON APIs
Icon
Parsing XML APIs
Icon
Parsing a web page using BeautifulSoup
Icon
Summary
9
9. Creating Command-line Interfaces
Icon
9. Creating Command-line Interfaces
Icon
Unit conversion application
Icon
Command-line interface
Icon
Summary
10
10. Debugging Applications with PDB and Log Files
Icon
10. Debugging Applications with PDB and Log Files
Icon
The Python debugger
Icon
Writing log files
Icon
Unit testing
Icon
Summary
11
11. Designing Your GUI with Qt
Icon
11. Designing Your GUI with Qt
Icon
Setting up the codebase
Icon
Building the UI with Qt Designer
Icon
Writing the UI code
Icon
Launching the UI
Icon
Packaging the code
Icon
Summary
12
Index
Icon
Index

Parsing JSON APIs

In this section, we will be creating a simple currency converter application that will be run from the command line using the free to use Fixer.io API (http://fixer.io) to provide the exchange rates, which are updated daily (which is less frequent than some other paid for APIs, but will be good enough for our use).

This is a JSON API; an example URL is: http://api.fixer.io/latest?base=GBP&symbols=JPY,EUR

This is making a request for the exchange rates to convert British pounds to Euro and Yen and returns data in the format:

{
    "base": "GBP",
    "date": "2015-07-08",
    "rates": {
        "JPY": 186.64,
        "EUR": 1.3941
    }
}

As we will see in the next code, this data can be parsed using the json Python module, which will return the structure of the JSON tree as a nested tree of Python dictionaries.

We will start by importing the required Python modules for this script, which we will save as currency_converter.py:

import urllib2
import json
from string import...
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)
End of Section 8
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon