Given the sample code below, identify the different parts of using a function and explain the purpose. The parts to identify are:

function definition header

function call

argument

parameter

return statement

# identify the parts of code below

def double_amount(amount):

double = amount * 2

print('Twice that amount is ' + str(double))

return double

num = int(input('Enter a number: ')

print(double_amount(num))

Then, write your own sample function that has one parameter and does something simple, including at least one print statement.