PCAP Exam - Question 109

Question

Assuming that the following code has been executed successfully, which of the expressions evaluate to True? (Choose two. ).

Examice · Accepted Answer

The function f(x, y) defines a nested function g() that returns the result of dividing x by y (nom by denom). When f(1, 2) is called, it returns the function g which will return 1/2 when invoked with a(). Similarly, f(3, 4) returns a different function g that will return 3/4 when invoked with b(). Therefore, a and b are different functions, making 'a != b' True. Also, since a is assigned to a function returned by f, 'a is not None' is True.

macxsz · Answer

B. a != b
C. a is not None

seaverick · Answer

def f(x,y):
    nom,denom = x,y
    def g():
        return nom/denom
    return g

a=f(1,2)
b=f(3,4)

print(a is not None)
print(a!=b)
print(a() == 4)
print(b() == 4)

B,C

Damon54 · Answer

Example Closure ,

def f(x, y):
    nom, denom = x, y
    def g():
        return nom / denom
    return g

a = f(1, 2)
b = f(3, 4)

fun1 = a
fun2 = b

print(fun1())
print(fun2())

PCAP Exam - Question 109

Discussion