Class HorizontalRule

Lib/pydoc.py:921–927

        # Cute little class to pump out a horizontal rule between sections.
        class HorizontalRule:
            def __init__(self):
                self.needone = 0
            def maybe(self):
                if self.needone:
                    push('<hr>\n')
                self.needone = 1
        hr = HorizontalRule()

        # List the mro, if non-trivial.