Lesson 2
Parameters & Returns
Pass data to functions
1What are Parameters?✨
Parameters are special variables in functions that allow you to pass data into them. This makes your functions more flexible and reusable. When you define a function, you can specify parameters to accept input.
2Example of Parameters:🎯
def greet(name):
print("Hello, " + name + "!")greet("Alice")
greet("Bob")In this example, `name` is a parameter that takes the values "Alice" and "Bob".
3Why Use Parameters?💡
- ✓ Make functions reusable with different data
- ✓ Reduce code duplication
- ✓ Simplify complex programs by breaking them into smaller functions
4Returning Values from Functions🚀
Functions can also send back values using the `return` statement. This allows you to capture the output of a function and use it later in your code.
5Example of Return Values:🔍
def add_numbers(a, b):
return a + bresult = add_numbers(5, 3)
print(result)Here, `add_numbers` returns the sum of `a` and `b`, which we store in the variable `result`.
6Combining Parameters and Returns⭐
You can use both parameters and return values to create powerful functions. This helps in building more complex and interactive programs.
7Example:🧩
def multiply(x, y):
return x * yproduct = multiply(4, 6)
print(product)In this case, the function `multiply` takes two parameters and returns their product.
8Practice Makes Perfect🎈
Now it's your turn! Try creating a function that takes two numbers and returns their difference. Use parameters effectively and see what you can create!
🎯 Practice Challenges
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Parameters & Returns - Easy Challenge
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Parameters & Returns - Medium Challenge
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Parameters & Returns - Hard Challenge
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- ← Previous lessonLesson 1: Functions BasicsCreate reusable code blocks
- Next lesson →Lesson 3: ListsStore multiple items
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