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

Instance variables


Instance variables refer to the data that are unique to instances (objects). Let's create an instance variable. We will write a new class2.py program:

class Leapx_org():
  pass
L_obj1 = Leapx_org()
L_obj2 = Leapx_org() 
L_obj1.f_name = "Mohit"
L_obj1.L_name = "RAJ"
L_obj1.pamount = "60000"
L_obj2.f_name = "Ravender"
L_obj2.L_name = "Dahiya"
L_obj2.pamount = "70000"
print L_obj1.f_name+ " "+ L_obj1.L_name
print L_obj2.f_name+ " "+ L_obj2.L_name

 

In the preceding code, L_obj1.f_name, L_obj1.L_name, and L_obj1.pamount are the instance variables, which are unique to the L_obj1 instance. Similarly, L_obj2.f_name, L_obj2.L_name, and L_obj2.pamount are the instance variables of the L_obj2 instance.

Let's run the code:

Output of code class2.py

If we create an instance variable, as shown in the code, then we would not get benefit of making a class. You can see repeatable code for both the instances. So we would not have to set the variable all the time. In order to make it automatically...