In Python 3.2b2, html.entities.codepoint2name and name2codepoint only support the 252 HTML entity names defined in the HTML 4 spec from 1997. I'm wondering if there's a reason not to support W3C Recommendation 'XML Entity Definitions for Characters'
http://www.w3.org/TR/xml-entity-names/
This standard contains significantly more characters, and it is noted in that spec that the HTML 5 drafts use that spec's entities. You can see the current HTML 5 'Named character references' here:
http://www.w3.org/TR/html5/named-character-references.html#named-character-references
If this is just a matter of somebody going in to do the grunt work, let me know.
If startup costs associated with importing a huge dictionary are a concern, perhaps a more efficient type that enables the same lookup interface can be defined.
If other reasons exist to not move in this direction, please do let me know!