- Python Function 🔹 Definition: A function in Python is a named block of code designed to perform a specific task. Functions allow for code reuse and modular programming, making code easier to manage, test, and understand.
🔹 Purpose: *To avoid repetition of code. *To divide complex problems into smaller, manageable sections. *To improve code readability and structure.
🔹 Types of Functions: 1.Built-in Functions: Provided by Python (e.g., print(), len(), max()). sub(), add(), greet(). 2.User-defined Functions: Created by programmers using the def keyword.
Created by programmers using the def keyword. 🔹 Components of a Function: *Function Name: The identifier used to call the function. *Parameters: Optional inputs passed into the function. *Function Body: The set of statements that define what the function does. *Return Statement: Optional statement used to send a result back to the caller.
🔹 Function Lifecycle: *Definition: Declaring the function with a name and optional parameters. *Invocation (Call): Executing the function using its name and providing necessary arguments. *Execution: Performing the logic defined in the function body. *Return: Optionally returning a value to the caller.
🔹 Advantages of Using Functions: *Code Reusability *Modularity *Easier Testing and Debugging *Improved Readability *Scalability