[Python-ideas] New 3.x restriction on number of keyword arguments (original) (raw)

Cesare Di Mauro cesare.di.mauro at gmail.com
Fri Oct 22 22:36:49 CEST 2010


2010/10/22 Marcin 'Qrczak' Kowalczyk <qrczak at knm.org.pl>

2010/10/22 Cesare Di Mauro <cesare.di.mauro at gmail.com>:

> I think that having more than 255 arguments for a function call is a very > rare case for which a workaround (may be passing a tuple/list or a > dictionary) can be a better solution than having to introduce a brand new > opcode to handle it. It does not need a new opcode. The bytecode can create an argument tuple explicitly and pass it like it passes *args. -- Marcin Kowalczyk

It'll be too slow. Current CALL_FUNCTION* uses "packed" ints, not PyLongObject ints.

Having a tuple you need (at least) to extract the PyLongs, and convert them to ints, before using them.

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