from sgmllib import SGMLParser

class SGMLProcessor(SGMLParser):
    def reset(self):
        self.pieces = []
        SGMLParser.reset(self)

    def unknown_starttag(self, tag, attrs):
        strattrs = "".join([' %s="%s"' % (key, value) for key, value in attrs])
        self.pieces.append("<%(tag)s%(strattrs)s>" % locals())

    def unknown_endtag(self, tag):
        self.pieces.append("</%(tag)s>" % locals())

    def handle_data(self, text):
        self.pieces.append(text)

    def output(self):
        return ''.join(self.pieces)

input = """<root>
 <tag1></tag1>
 <tag2/>
 <tag3>hello</tag3>
</root>"""

parser = SGMLProcessor()
parser.feed(input)
parser.close()

print
print 'Input:'
print input
print 
print 'Output:'
print ''.join(parser.output())
print
print 'Expected:'
print input.replace('<tag2/>', '<tag2></tag2>')