Question

Does anybody know why this below code prints 0 and 1 rather than 5 and 2, in csharp similar code would print 5 and 2 and I am just trying to work out the logic here.

class Myclass:
    a = 0
    b = 1 

def foo():
    for x in range(1):
        for y in range(1):
            myclass = Myclass()
            if y == 1:
                myclass.a = 5
            if y == 1:
                myclass.b = 2
            ClassList.append(Myclass)

    for x in ClassList:
        print x.a   
        print x.b

ClassList = []
foo()   

Answer 1

The reason is that range(1) returns [0], not [0, 1], so your y == 1 test never evaluates to true.

Also, you’re appending Myclass rather than myclass — that is, the actual class, rather than the instance you created — to the list, so you’re always printing the unmodified a and b from the class.