XHTML(..., lang='en', doctype='transitional', xmlns='http://www.w3.org/1999/xhtml') |
XHTML(..., lang='en')
doctype can be 'strict', 'transitional', 'frameset', or a full doctype string.
XHTML(..., lang='en', doctype='transitional', xmlns='http://www.w3.org/1999/xhtml')