# test basic properties of exceptionsprint(repr(IndexError()))print(str(IndexError()))print(str(IndexError("foo")))a=IndexError(1,"test",[100,200])print(repr(a))print(str(a))print(a.args)s=StopIteration()print(s.value)s=StopIteration(1,2,3)print(s.value)print(OSError().errno)print(OSError(1,"msg").errno)