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# test that no-arg super() works when self is closed over
class A:
def __init__(self):
self.val = 4
def foo(self):
# we access a member of self to check that self is correct
return list(range(self.val))
class B(A):
def foo(self):
# self is closed over because it's referenced in the list comprehension
# and then super() must detect this and load from the closure cell
return [self.bar(i) for i in super().foo()]
def bar(self, x):
return 2 * x
print(A().foo())
print(B().foo())
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