On 2019-12-02 09:55:16 -0800, Rob Gaddi wrote:
> The struct situation is, as you said, a bit different. I believe that with
> the default native alignment @, you're seeing 4-byte data padded to an
> 8-byte alignment, not 8-byte data.
Nope. That's really an 8 byte long:
Python 3.7.3 (default,
On 2019-12-05 09:27:43 +, Barry Scott wrote:
> On 3 Dec 2019, at 01:50, Richard Damon wrote:
> > On 12/2/19 4:25 PM, Barry Scott wrote:
> > x=struct.pack('L',0x102030405)
> > x
> >> b'\x05\x04\x03\x02\x01\x00\x00\x00'
> >>
> >> Given I have exact control with b, h, i, and q but L is n
> On 3 Dec 2019, at 01:50, Richard Damon wrote:
>
> On 12/2/19 4:25 PM, Barry Scott wrote:
>>
>>> On 2 Dec 2019, at 17:55, Rob Gaddi
>>> wrote:
>>>
>>> On 12/2/19 9:26 AM, Chris Clark wrote:
Test case:
import array
array.array('L', [0])
# x.i
On Wed, Dec 4, 2019 at 4:16 PM Chris Clark wrote:
> I think the consensus from the various threads is that the docs are either
> lacking or misleading.
>
> I mentioned that this impacts bytes and the problem there is more telling as
> it hard fails (this is how I first discovered this was an iss
array('L', [0])
if x.itemsize == 4:
FMT_ARRAY_4BYTE = 'L'
FMT_STRUCT_4BYTE = '
Sent: Monday, December 2, 2019 5:50 PM
To: python-list@python.org
Subject: Re: array and struct 64-bit Linux change in behavior Python 3.7 and 2.7
On 12/2/
On 12/2/19 5:50 PM, Richard Damon wrote:
Perhaps array could be extended so that it took '4' for a 4 byte integer
and '8' for an 8 byte integer (maybe 'U4' and 'U8' for unsigned). Might
as well also allow 1 and 2 for completeness for char and short (but
those are currently consistent).
I wil
On 12/2/19 4:25 PM, Barry Scott wrote:
>
>> On 2 Dec 2019, at 17:55, Rob Gaddi wrote:
>>
>> On 12/2/19 9:26 AM, Chris Clark wrote:
>>> Test case:
>>>import array
>>>array.array('L', [0])
>>> # x.itemsize == 8 rather than 4
>>> This works fine (returns 4) under Wind
On 02/12/2019 22.25, Barry Scott wrote:
>
>
>> On 2 Dec 2019, at 17:55, Rob Gaddi wrote:
>>
>> On 12/2/19 9:26 AM, Chris Clark wrote:
>>> Test case:
>>>import array
>>>array.array('L', [0])
>>> # x.itemsize == 8 rather than 4
>>> This works fine (returns 4) under
> On 2 Dec 2019, at 17:55, Rob Gaddi wrote:
>
> On 12/2/19 9:26 AM, Chris Clark wrote:
>> Test case:
>>import array
>>array.array('L', [0])
>> # x.itemsize == 8 rather than 4
>> This works fine (returns 4) under Windows Python 3.7.3 64-bit build.
>> Under Ubunt
On 12/2/19 9:26 AM, Chris Clark wrote:
Test case:
import array
array.array('L', [0])
# x.itemsize == 8 rather than 4
This works fine (returns 4) under Windows Python 3.7.3 64-bit build.
Under Ubuntu; Python 2.7.15rc1, 3.6.5, 3.70b3 64-bit this returns 8.
Docum
On Dec 2, 2019, at 12:32 PM, Chris Clark wrote:
>
> Test case:
>
> import array
> array.array('L', [0])
> # x.itemsize == 8 rather than 4
>
> This works fine (returns 4) under Windows Python 3.7.3 64-bit build.
>
> Under Ubuntu; Python 2.7.15rc1, 3.6.5, 3.70b3 64
Test case:
import array
array.array('L', [0])
# x.itemsize == 8 rather than 4
This works fine (returns 4) under Windows Python 3.7.3 64-bit build.
Under Ubuntu; Python 2.7.15rc1, 3.6.5, 3.70b3 64-bit this returns 8.
Documentation at https://docs.python.org/3/libra
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