[PyGreSQL] datetime.(date|datetime|timedelta)

[Christoph Zwerschke]

 > If datetime or mx datetypes are requested, then connect()
 > could execute a "show datestyle" and check if the database
 > is really running with ISO datestyle and raise an error
 > otherwise. How do you think about that?

Need to comment myself: That would be bad because it would not allow to 
switch the datestyle to ISO with 'set datestyle' after making the 
connection. Maybe PyGreSQL should do it automatically in this case?

-- Christoph