Question
class A:
def __init__(self, x= 1):
self.x = x
class der(A):
def __init__(self,y = 2):
super().__init__()
self.y = y
def main():
obj = der()
print(obj.x, obj.y)
main()a.
Error, the syntax of the invoking method is wrong
b.
The program runs fine but nothing is printed
c.
1 0
d.
1 2
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