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

By : Dan Nixon
Book Image

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

By: Dan Nixon

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Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)
Dan Nixon
Sep, 2015 | 200 pages
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Table of Contents (18 chapters)
Getting Started with Python and Raspberry Pi
Getting Started with Python and Raspberry Pi
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Your First Steps with Python on the Pi
Your First Steps with Python on the Pi
Installing and setting up Raspbian
The Python development tools
Running some simple Python scripts
Summary
2
Understanding Control Flow and Data Types
Understanding Control Flow and Data Types
Data in Python
Control flow operators
Using functions
Summary
3
Working with Data Structures and I/O
Working with Data Structures and I/O
Data structures
Input/output
Summary
4
Understanding Object-oriented Programming and Threading
Understanding Object-oriented Programming and Threading
Object-oriented programming
Classes in Python
Threading
Summary
5
Packaging Code with setuptools
Packaging Code with setuptools
Using packages in your Python code
Packaging your own Python modules
Summary
6
Accessing the GPIO Pins
Accessing the GPIO Pins
Digital electronics
The GPIO library
Universal Asynchronous Receiver/Transmitter (UART)
Additional libraries
Summary
7
Using the Camera Module
Using the Camera Module
Setting up the camera module
Installing and testing the Python library
Writing applications for the camera
Summary
8
Extracting Data from the Internet
Extracting Data from the Internet
Using urllib2 to download data
Parsing JSON APIs
Parsing XML APIs
Parsing a web page using BeautifulSoup
Summary
9
Creating Command-line Interfaces
Creating Command-line Interfaces
Unit conversion application
Command-line interface
Summary
10
Debugging Applications with PDB and Log Files
Debugging Applications with PDB and Log Files
The Python debugger
Writing log files
Unit testing
Summary
11
Designing Your GUI with Qt
Designing Your GUI with Qt
Setting up the codebase
Building the UI with Qt Designer
Writing the UI code
Launching the UI
Packaging the code
Summary
Index
Index

Chapter 8. Extracting Data from the Internet

In this chapter, we will look at ways we can extract data and files from the Internet using a range of data formats and services, namely web services (or Application Protocol Interfaces (APIs)) using the Extensible Markup Language (XML) and JavaScript Object Notation (JSON) data formats.

We will also look at how we can use Python to download files and extract information from web pages for when a website does not offer an API to access their data.

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