can somebody explain this question to me in easy language

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))

Answer 1

Ya sure NIKHIL

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

You have created a function name add with 2 parameters and you are returning the sum of those 2

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

You have created a function called do twice which accepts 3 parameters

[ IMPORTANT ]
How to assign a function in a variable

>>> p = print #note we haven't called function by using ()
>>>
>>> p("Hello, World")
Hello, World

>>> k = list
>>> k()
[]

Now same with your case,

a = 5
b = 10
print(do_twice(func=add, x=a, y=b))

in your function now whenever you write func() it will only call add, means its similar to

add(add(5, 10), add(5, 10))
add(15, 15)
= 30

Hope it's helpful!

Happy Learning 🙂

Example: https://code.sololearn.com/cM8gk3xKaF5F/?ref=app

Answer 2

NIKHIL

Explanation is here

https://code.sololearn.com/cgfonDJu8pH0/?ref=app

Answer 3

You really don't need to understand this code, cz you can double the value in multiple ways, i always prefer to use while and for loops. because functions are bit slow