Re: type cast

Imre Horvath <blemidon@gmail.com> writes:
> I've got a plpython function, with a character varying param.
> I can call it from sql.
> But when i try to call it with psycopg2.callproc('testfunc', ['test']),
> i've got the error:
> function testfunc(unknown) does not exist
> HINT:  No function matches the given name and argument types. You might
> need to add explicit type casts.

That doesn't sound like a type cast issue.  I'd bet you connected to the
wrong database from your python app, or are using a different
search_path setting, or something along that line.
        regards, tom lane