[Python-Dev] int/long FutureWarning

Martin v. L÷wis martin@v.loewis.de
28 Nov 2002 10:32:47 +0100


Guido van Rossum <guido@python.org> writes:

> But in Mark's case (and in many other cases) there will be no problem
> in the future -- in Python 2.4, his C code will happily accept the
> positive Python longs that 0x80000000 and others will be then.

Can you please explain how this will happen? If you do 

  int x;
  PyArg_ParseTuple(args,"i",&x);

and args is (0x80000000,), what will be the value of x?

> BTW, this reminds me that I've long promised a set of new format codes
> for PyArg_ParseTuple() to specify taking the lower N bits (for N in
> 8, 16, 32, 64) and throwing the rest away, without range checks. 

Wouldn't Mark have to use these format codes?

Regards,
Martin