class Example(object):

    def __enter__(self):
        print("Calling Enter")
        return 73

    def __exit__(self, exc_type, exc_value, traceback):
        print("Calling Exit: %s, %s, %s" % (
            exc_type, exc_value, traceback
        ))
        # This will stop the exception 
        # from being propagated
        return True 


with Example() as ex:
    print(ex)

with Example() as ex:
    raise Exception