Learn Python Functions Beginner Tutorial while using a Screen Reader
• def keyword: This declares that you're defining a function.
• function_name: Choose a descriptive name for your function that reflects its purpose.
• arguments (optional): These are values you can pass to the function when you call it. They are like inputs to the function.
• function body: This is the indented block of code that contains the instructions the function executes.
• return statement (optional): This statement allows the function to return a value to the part of the code that called it.
You call a function by using its name followed by parentheses. You can optionally pass arguments within the parentheses. The arguments are provided in the same order they are defined in the function's arguments list.
Benefits of Functions:
• Code Reusability: Functions allow you to avoid writing the same code repeatedly. This makes your code more concise and easier to maintain.
• Improved Readability: Functions break down your code into smaller, well-defined blocks, making it easier to understand.
• Modularity: Functions promote modularity by encapsulating specific tasks within reusable units.
Additional Tips:
• Choose meaningful and descriptive names for your functions.
• Use comments to explain the purpose of your functions and arguments.
• Start with simple functions that perform basic tasks and gradually build on them as you get comfortable.
def is_even(number):
"""
This function checks if a number is even or odd.
Args:
number: The number to check.
Returns:
True if the number is even, False otherwise.
"""
Check if the remainder of dividing the number by 2 is zero
return number % 2 == 0
Example usage
number = 10
if is_even(number):
print(f"{number} is even")
else:
print(f"{number} is odd")
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