Book Image

Learn Python in 7 Days

Book Image

Learn Python in 7 Days

Overview of this book

Python is a great language to get started in the world of programming and application development. This book will help you to take your skills to the next level having a good knowledge of the fundamentals of Python. We begin with the absolute foundation, covering the basic syntax, type variables and operators. We'll then move on to concepts like statements, arrays, operators, string processing and I/O handling. You’ll be able to learn how to operate tuples and understand the functions and methods of lists. We’ll help you develop a deep understanding of list and tuples and learn python dictionary. As you progress through the book, you’ll learn about function parameters and how to use control statements with the loop. You’ll further learn how to create modules and packages, storing of data as well as handling errors. We later dive into advanced level concepts such as Python collections and how to use class, methods, objects in python. By the end of this book, you will be able to take your skills to the next level having a good knowledge of the fundamentals of Python.
Table of Contents (18 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
2
Type Variables and Operators

The Python package


Python modules is a single file, whereas a Python package is a collection of modules. A package is a directory that contains Python modules and one additional file: __init__.py. What is the need of a package? Consider a team gets a project to convert the recording sound into MP3 format. One developer writes a code rectomp3.py to convert the recording voice to MP3 sound in the sound_conversion directory. After some time, the team gets new requirements to convert the recording voice to .wav format. Instead of writing in the rectomp3.py file, we write our own code rectowav.py file in sound_conversion. Then, a new requirement comes by where you need to convert the recording to WMA format. Again, a new author writes a new code rectowma.py file in the same directory sound_conversion. In this way, they make a package just adding one more file __init__.py. Let's take a practical example.

Here, you can see the code rectomp3.py in sound_conversion:

 #Written by Mohit
 def rec2mp3...