Python Functions and List Operations

Practice basic function definitions and list comprehensions in Python.

def calculate_average(numbers: list[int]) -> float:
    if not numbers:
        return 0.0
    return sum(numbers) / len(numbers)

data = [10, 20, 30, 40, 50]
result = calculate_average(data)

squared = [x ** 2 for x in data if x > 20]
print(f"Average: {result}, Squared: {squared}")