Functions as Objects

Question

What can I put in the space to complete?
def square (x):
return x*x
def test(func, x):
print (func(x))
test( ______, 42)

Answer 1

Yes. That's it.
test function calls square function with 42 argument with func as alias name..

Answer 2

What is the test function expecting as first argument?
What is purpose of square function? Think again.

Answer 3

test(square,42) 😀