instance-methods

Instance Methods Exercises

Instance methods are functions that belong to objects and can access/modify the object's data through the self parameter.

Key Concepts

The self Parameter

• First parameter of every instance method
• Refers to the current object
• Python automatically passes it when you call the method

class Example:
    def __init__(self, value):
        self.value = value
    
    def get_value(self):  # self is automatic
        return self.value

Types of Instance Methods

• Getters: Return object data
• Setters: Modify object data
• Actions: Perform operations that may change state
• Queries: Answer questions about the object

Method Design Principles

• Methods should have a single, clear purpose
• Use descriptive names that indicate what the method does
• Consider whether the method should return a value or modify state
• Keep methods focused and concise

Tips

• Always include self as the first parameter
• Use self.attribute to access instance variables
• Methods can call other methods using self.method_name()
• Consider returning self for method chaining