Python Higher Order Functions

Question

Hi, I am new to Python and am currently learning Chapter 05 of the Python lesson. I have a query on higher order function. Please refer to below for my code.

x = int(input())
print("Input a number:",x)
print("Your number will produce the output of double adding five:")

def Higher(func, arg):
return func(func(arg))

def Base(x):
answer = int(x+5)
return answer
print(Higher(Base,x))

01. I understand that the above will not work if I try to code 2 inputs because the Base function will return only 1 value to the Higher function. Is this understanding correct?

02: How should I code if I want to use higher order function with 2 arguments (eg. x + y + 5 twice) ?

03. Is this a correct use case to use higher order function?

Thank you in advance.

Answer 1

First, your understanding appears to be correct.

Second, I attached code below that takes two inputs, adds them together, adds five, doubles that sum and then adds five again (I think that was what you were asking for):

x = int(input())
y = int(input())
print("Input a number:",x)
print("Input another number:",y)
print("Your number will produce the output of adding both inputs, adding five, and then doubling the result and adding five again:")

def Higher(func, arg1, arg2):
return func(func(arg1,arg2), func(arg1,arg2))

def Base(x, y):
answer = int(x+y+5)
return answer
print(Higher(Base,x,y))

I really hope this helps!

Answer 2

Hi Eden,

Thank you so much. I got it after your explanation.

# return func(func(arg1,arg2), func(arg1,arg2))

This was the code that I failed to write in my script which causes errors when I try to run it.

Your explanation also helps me on my understanding for Decorators, which is basically similar to the above.

Thank you and appreciate your kind assistance in this.