Introduction
I've heard about "functions" in programming. What are they?
Functions are reusable pieces of code that perform a specific task. They make your code more organized and easier to maintain.
Cool! Can you show me how to create and use functions?
Sure! Let's learn about functions in Python.
Step 1: Defining a Function
How do we create a function?
To create a function, you need to use the "def" keyword, followed by the function name, parentheses, and a colon. The function's code goes inside the indented block.
def greet():
print("Hello, world!")
Step 2: Calling a Function
And how do we use a function?
You "call" a function by using its name followed by parentheses. Here's how to call the "greet" function:
greet()
Output:
Hello, world!
Step 3: Function Parameters and Return Values
Can functions take input or give back output?
Yes! Functions can take input through "parameters" and return output using the "return" keyword.
def add(a, b):
return a + b
result = add(5, 10)
Show me the result!
Here you go!
print(result)
Output:
15
Conclusion
Now you know the basics of functions in programming! Functions are a powerful way to organize and reuse your code, making it more efficient and easier to maintain. Keep practicing, and you’ll master functions in no time! 🚀