Functions within Functions - Callback Functions

A callback function is a function that is passed as a parameter to another function and is invoked within that function.

Callbacks are useful for executing additional actions when certain conditions are met or for processing follow-up tasks after data is ready.

Callback functions are passed as parameters to other functions, which then invoke them to dynamically execute various operations.

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# Define callback functions
def add_one(number):
    return number + 1

def multiply_by_two(number):
    return number * 2

# Function that accepts a callback function as an argument
def process_number(number, callback):
    result = callback(number)
    print(f"Processed Result: {result}")

# Process with add_one function, prints 11
process_number(10, add_one)
# Process with multiply_by_two function, prints 20
process_number(10, multiply_by_two)