In programming, a function is a reusable block of code that performs a specific task or set of tasks. Functions are designed to be modular and are fundamental to the concept of procedural and structured programming. They allow developers to organize code, improve code reusability, and facilitate better maintenance and debugging. A Python function typically has the following components:
- Function Name: A unique identifier for the function, allowing you to call it from other parts of the code.
- Parameters (or Arguments): Input values that are passed to the function. These are variables that the function uses to perform its task.
- Function Body: The set of statements or instructions that define what the function does. This is the code block executed when the function is called.
- Return Statement: An optional statement that specifies the value the function should produce as output. If a function doesn’t have a return statement, it may simply perform a task without producing a specific result.
def greet(name):
"""This function greets the person passed in as a parameter."""
print("Hello, " + name + "!")
# Calling the function
greet("Alice")- Function Name:
greet
