Functions

Question

def add(x, y):
return x + y

def do_twice(func, x, y):
return func(func(x, y), func(x, y))

a = 5
b = 10

print(do_twice(add, a, b))

Result:
>>>
30
>>>

Guys can you explain me please how does this exercise work?

I cannot understand it at all. What is the role of argument "func"? And how does the second return work. how do we get 30? Somebody explain me please!

Answer 1

https://www.sololearn.com/Discuss/1505603/i-don-t-understand-this-code-somebody-help-me
https://www.sololearn.com/Discuss/41733/def-add-x-y-return-x-y-def-do_twice-func-x-y-return-func-func-x-y-func-x-y-a-5-b-10-print-do_twice
https://www.sololearn.com/Discuss/577175/can-anyone-explain-this
https://www.sololearn.com/Discuss/478557/functions-as-objects
https://www.sololearn.com/Discuss/268/what-exactly-is-the-point-of-assigning-a-function-to-a-variable

https://www.sololearn.com/Discuss/1316935/welcome-to-sololearn-forum/

Answer 2

Thank you Anna :)