On Sat, Aug 30, 2008 at 8:07 AM, Hagen Fürstenau
<[EMAIL PROTECTED]> wrote:
> While __len__() is allowed to return a value of any size, issues 2723
> and 3729 need a decision on what len() should do if the value doesn't
> fit in a Py_ssize_t.
>
> In a previous thread
> (http://mail.python.org/piper
On Tue, Sep 2, 2008 at 12:26 PM, Guido van Rossum <[EMAIL PROTECTED]> wrote:
> I stand by my view. I might voice strong discomfort with raising an
> exception because it doesn't fit in some implementation detail.
Isn't that precisely what OverflowError is for? ("it doesn't fit in some
implementat
On Tue, Sep 2, 2008 at 11:14 AM, Daniel Stutzbach
<[EMAIL PROTECTED]> wrote:
> On Tue, Sep 2, 2008 at 12:26 PM, Guido van Rossum <[EMAIL PROTECTED]> wrote:
>> I stand by my view. I might voice strong discomfort with raising an
>> exception because it doesn't fit in some implementation detail.
>
> I
From: "Guido van Rossum" <[EMAIL PROTECTED]>
The way I see it is that there are tons of ways I can think of how
raising OverflowError can break unsuspecting programs (e.g. code that
has been tested before but never with a humungous input), whereas
returning a "little white lie" would allow such c
On Tue, Sep 2, 2008 at 12:08 PM, Raymond Hettinger <[EMAIL PROTECTED]> wrote:
> From: "Guido van Rossum" <[EMAIL PROTECTED]>
>>
>> The way I see it is that there are tons of ways I can think of how
>> raising OverflowError can break unsuspecting programs (e.g. code that
>> has been tested before bu
why would it raise an index error when log_entries has more indicies
then sys.maxsize, it should just check the entry @ sys.maxsize.
Maybe I missed it, but why cant len just return an int, which if I
remember correctly is now a long in py3k, so on a 64 bit system len
would (hopefully) never lie, b
That makes sense to me and there a probably plenty of examples.
However, I worry more about other examples that will fail
and do so it a way that is nearly impossible to find through
code review (because the code IS correct as written).
n = len(log_entries)
if log_entries[n] in handled:
This
On Tue, Sep 2, 2008 at 1:35 PM, Raymond Hettinger <[EMAIL PROTECTED]> wrote:
>>> That makes sense to me and there a probably plenty of examples.
>>> However, I worry more about other examples that will fail
>>> and do so it a way that is nearly impossible to find through
>>> code review (because th
On Tue, Sep 2, 2008 at 3:53 PM, Guido van Rossum <[EMAIL PROTECTED]> wrote:
> The only time when __len__ can be larger than sys.maxsize is when the
> class implements some kind of virtual space where the values are
> computed on the fly. In such cases trying to walk over all values is
> bound to t
On Tue, Sep 2, 2008 at 2:53 PM, Guido van Rossum <[EMAIL PROTECTED]> wrote:
> The only time when __len__ can be larger than sys.maxsize is when the
> class implements some kind of virtual space where the values are
> computed on the fly. In such cases trying to walk over all values is
> bound to ta
Guido van Rossum wrote:
> The only time when __len__ can be larger than sys.maxsize is when the
> class implements some kind of virtual space where the values are
> computed on the fly. In such cases trying to walk over all values is
> bound to take forever, and the length is likely not of all that
Dj Gilcrease wrote:
> why would it raise an index error when log_entries has more indicies
> then sys.maxsize, it should just check the entry @ sys.maxsize.
>
> Maybe I missed it, but why cant len just return an int, which if I
> remember correctly is now a long in py3k, so on a 64 bit system len
From: "Guido van Rossum" <[EMAIL PROTECTED]>
That said, I would actually be okay with the status quo (which does
raise an OverflowError) as long as we commit to fixing this properly
in 2.7 / 3.1, by removing the range restriction (like we've done for
other int operations a long time ago).
And t
Nick Coghlan wrote:
- we're just going to have to add a second C level method slot that uses
the unaryfunc signature (returning PyObject *) for a "virtual length"
method in addition to the existing mp_length and sq_length (which return
PySsize_t).
As an aside, is there any plan to clean up the
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