Predict the output of the following code:

Q. Predict the output of the following code:

a = 10
y = 5
def myfunc():
    y = a
    a = 2
    print("y =", y, "a =", a)
    print("a+y =", a + y)
    return a + y
print("y =", y, "a =", a)
print(myfunc())
print("y =", y, "a =", a)

Answer =

Output:-

y = 5 a = 10

Error

Explanation :- Because at first y and a are global variables so we can not use y,a (variable) directly in function.
If we want to use "y" and "a" in function, we have to write
global y
global a
before  

y = a
a = 2
print("y =", y, "a =", a)
print("a+y =", a + y)
return a + y

in myfunc() Function.
So, the Correct program is :-

a = 10
y = 5
def myfunc():
    global y,a
    y = a
    a = 2
    print("y =", y, "a =", a)
    print("a+y =", a + y)
    return a + y
print("y =", y, "a =", a)
print(myfunc())
print("y =", y, "a =", a)

Output :-

y = 5 a = 10
y = 10 a = 2
a+y = 12
12
y = 10 a = 2
>>>