Python 2.3 Breaks PySQLite a Little
gh at ghaering.de
Thu Aug 7 11:15:53 CEST 2003
Greg Brunet wrote:
> "Gerhard Häring" <gh at ghaering.de> wrote:
>> And I intend to drop all this politically correct isinstance stuff
>>in a future version for performance reasons.
> Hey Gerhard:
> What will you be using to replace it with that will improve the
> performance? Is just doing a: type(value) that much faster?
Well, my plan is to rewrite PySQLite completely in C (maybe using PyRex).
You're right, it doesn't make a big difference if you use issubclass()
or type() in an if-elif chain. But using type() makes it possible to use
a dictionary to map types to quote functions, which *should* be faster.
Note the "should" ;-)
I'll have to benchmark a little more. However I really want to add the
feature of being able to register new quote functions without
subclassing the type in question and adding a _quote() method, which is
currently the only way. Apart from directly hacking the PySQLite
sources, like you did ;-)
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