Object in python tells about object oriented programming in python

Object in python tells about object oriented programming in python

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  GOVERNMENT COLLEGE OFENGINEERING AND TEXTILE TECHNOLOGY, SERAMPORE PRESENTATION ON “Objects in Python" Presented by RAKESH SHAW (11001421024) TEXTILE TECHNOLOGY (3rd year, 6th sem) UNDER THE GUIDANCE OF SMT. PRIYANKA MA'AM PAPER NAME :- INTRODUCTION TO PYTHON (OETT-601B)
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  PYTHON PLAYGROUND: BUILDING WITHOBJECTS
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  CONTENTS​ Topic name​ INTRODUCTION TOPYTHON CHARACTERISTICS OF PYTHON OBJECT IN PYTHON PYTHON CLASSES NEED FOR CREATING A CLASS AND OBJECT IN PYTHON DECLARING CLAAS OBJECTS (ALSO CALLED INSTANTIATING A CLASS) EXAMPLE OF PYTHON CLASS AND OBJECT ​ACKNOWLEDGEMENT, ​REFERENCES SL. NO. 1. 2. 3. 4. 5. 6. 7. 8. Page No.​ 01 02 03 - 04 05 06 07 08 - 09 10
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  INTRODUCTION TO PYTHON • Pythonis a widely used general-purpose, high level programming language. • It was initially designed by Guido van Rossum in 1991 and developed by Python Software Foundation. • It was mainly developed for emphasis on code readability, and its syntax allows programmers to express concepts in fewer lines of code. • Python is a programming language that lets you work quickly and integrate systems more efficiently 1
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  CHARACTERISTICS OF PYTHON Followingare important characteristics of python programming −  It supports functional and structured programming methods as well as oop.  It can be used as a scripting language or can be compiled to byte-code for building large applications.  It provides very high-level dynamic data types and supports dynamic type checking.  It supports automatic garbage collection.  It can be easily integrated with c, c++, com, activex, corba, and java. 2
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  OBJECT IN PYTHON •An object is a self-contained entity that combines data (called attributes) and behavior (called methods) into a single unit. • Objects are concrete instances of a class. • A class is like a blueprint that defines the attributes (data) and methods (functions) an object can have. • Each object is its own unique entity with its own set of data and functions. 3
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  An object consistsof: • State: It is represented by the attributes of an object. It also reflects the properties of an object. • Behavior: It is represented by the methods of an object. It also reflects the response of an object to other objects. • Identity: It gives a unique name to an object and enables one object to interact with other objects 4
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  PYTHON CLASSES • Aclass is a user-defined blueprint or prototype from which objects are created. • Classes provide a means of bundling data and functionality together. • Creating a new class creates a new type of object, allowing new instances of that type to be made. • Each class instance can have attributes attached to it for maintaining its state. • Class instances can also have methods (defined by their class) for modifying their state. Some points on Python class: • Classes are created by keyword class. • Attributes are the variables that belong to a class. • Attributes are always public and can be accessed using the dot (.) operator. Eg.: My class.Myattribute This Photo by Unknown author is licensed under CC BY-NC. 5
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  NEED FOR CREATINGA CLASS AND OBJECT IN PYTHON • To understand the need for creating a class and object in Python . let’s consider an example, let’s say you wanted to track the number of dogs that may have different attributes like breed and age. If a list is used, the first element could be the dog’s breed while the second element could represent its age. Let’s suppose there are 100 different dogs, then how would you know which element is supposed to be which? What if you wanted to add other properties to these dogs? This lacks organization and it’s the exact need for classes. • Syntax: Class Definition class ClassName: # Statement • Syntax: Object Definition obj = ClassName() print(obj.atrr) 6
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  DECLARING CLAAS OBJECTS(ALSO CALLED INSTANTIATING A CLASS) When an object of a class is created, the class is said to be instantiated. All the instances share the attributes and the behavior of the class. But the values of those attributes, i.e. the state are unique for each object. A single class may have any number of instances. Example: 7
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  EXAMPLE OF PYTHONCLASS AND OBJECT Creating an object in python involves instantiating a class to create a new instance of that class. This process is also referred to as object instantiation. Here is an example of a python class and object: class person: def __init__(self, name, age): self.Name = name self.Age = age def greet(self): print(f"hello, my name is {self.Name} and I am {self.Age} years old.") Person1 = person("john", 30) person2 = person("mary", 25) 8
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  PERSON1.GREET() PERSON2.GREET() OUTPUT: HELLO, MY NAMEIS JOHN AND I AM 30 YEARS OLD. Hello, my name is mary and i am 25 years old. In this example, the person class is a blueprint for creating objects that represent people. The __init__() method is a special method that is called when a new object is created. It takes two arguments, name and age, and assigns them to the name and age attributes of the object. The greet() method is a regular method that prints a greeting to the console. It takes no arguments, but it uses the self keyword to access the name and age attributes of the object. The person1 and person2 objects are instances of the person class. They have their own unique values for the name and age attributes. When the greet() method is called on the person1 and person2 objects, it prints a greeting to the console that includes the values of the name and age attributes of the objects. 9
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  ACKNOWLEDGEMENT I would liketo express my gratitude to the Python programming language community for its continuous efforts in developing and maintaining a versatile and powerful language. The concept of objects in Python has played a pivotal role in shaping the language's success. I appreciate the Python Software Foundation and all contributors for fostering an environment that encourages the use of object-oriented programming principles, making Python an accessible and robust tool for developers worldwide. Finally, I would like to acknowledge the vast online resources, tutorials, and educational platforms that have contributed immensely to the understanding of objects in Python. From comprehensive documentation to interactive learning environments, these resources have been instrumental in helping individuals grasp the intricacies of object-oriented programming in Python, fostering a strong and supportive learning community. REFERENCES • https://www.geeksforgeeks.org/python-classes-and-objects/ • file:///C:/Users/user/Downloads/Notes%2011%20(1).pdf 10