Python in 30 Days: A Practical and Theoretical Approach for Beginner.

Functions in Python

A function is a block of reusable code that performs a specific task.

We can define a function using the def keyword.

def function_name(parameters):
    # Code to be executed
    return result  # Optional

def greet(name):
    print(f"Hello, {name}!")

greet("Tom")  # Output: Hello, Tom!

In this example:

• def is used to define the function greet.
• name is the parameter of the function.
• greet("Tom") is calling the function and passing an argument ("Tom").

Parameters and Arguments

• Parameters: These are the placeholders we define in your function. They are like variables that are used to accept values.
• Arguments: These are the actual values you provide when calling the function. They match the order of the parameters.

Example with multiple parameters

def introduce(name, age):
    print(f"Hello, my name is {name} and I am {age} years old.")

introduce("Tom", 25)  # Output: Hello, my name is Tom and I am 25 years old.

Happy Coding and Stay Tuned 🙂

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