bijan: Here you will find many SPARQLy things.
DanC: incl SPARQL Variable Binding Results XML Format
DanC: incl SPARQL Variable Binding Results XML Format
Arnia: Like A above, only dealing with the temporal domain as opposed to the spatial one. As expected, collection theory models both domains well
DanC: more set goodies. Decimal
sbp: Best bit is probably the generator comprehensions. Used in conjunction with itertools, you can be much more efficient with respect to memory usage.