If I have a child class that inherits from a base class whose init() adds an item to an array, as follows:
class TestBaseClass :
arr = []
def __init__(self) :
print self.arr
self.arr.append(1)
print self.arr
return
class TestChildClass1(TestBaseClass) :
foo = 1
Then I find it strange that when I instantiate the child class twice,
test1 = TestChildClass1()
test2 = TestChildClass1()
the second one seems to not have an empty array but contains the value 1 that was added by the first.
Why is that base class instance shared by the two and not created as a new instance? This does not seem to be intuitively how one would expect inheritance to behave.
