Is this patch in 'Waiting on Author' state actually?
yes
I'll try redesign patch by Peter's proposal
Pavel
I don't think it's right to reuse SPIError for this. SPIError is clearly meant to signal an error in the SPI calls. Of course, we can't stop users from raising whatever exception they want, but if we're going to advertise that users can raise exceptions, then we should create separate exception classes.
I suppose the proper way to set this up would be to create a base class like plpy.Error and derive SPIError from that.
Do you have some ideas about the name of this class?