[FCC First class functions and Closures Blog] A higher-order function that takes a function as an argument

app.py

def apply_operation(operation, x, y):
    return operation(x, y)

# Functions to pass as arguments
def add(x, y):
    return x + y

def multiply(x, y):
    return x * y

# Using the higher-order function
result_add = apply_operation(add, 3, 4)
result_multiply = apply_operation(multiply, 3, 4)

print(result_add)       # Output: 7
print(result_multiply)  # Output: 12