def old_style(self):
    'Pop the current parser style and revert to the previous one.\n\n        See new_style().  ** experimental **\n        '
    if (len(self.style) <= 1):
        raise Error('only 1 parser style remaining')
    self.style.pop()
    return self.style[(- 1)]
Pop the current parser style and revert to the previous one.

See new_style().  ** experimental **
def old_style(self):
    'Pop the current parser style and revert to the previous one.\n\n        See new_style().  ** experimental **\n        '
    if (len(self.style) <= 1):
        raise Error('only 1 parser style remaining')
    self.style.pop()
    return self.style[(- 1)]