On 26/01/2022 22:41, Barry wrote:
Run python and your code under a debugger and check the ref count of
the object as you step through the code.
Don’t just step through your code but also step through the C python code.
That will allow you to see how this works at a low level.
Setting a watc
On Wed, Jan 26, 2022 at 2:35 PM Barry wrote:
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> On 26 Jan 2022, at 05:17, Dan Stromberg wrote:
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> On Tue, Jan 25, 2022 at 6:41 PM Dan Stromberg wrote:
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>> On Tue, Jan 25, 2022 at 2:23 PM Barry wrote:
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>>> On 25 Jan 2022, at 02:56, Dan Stromberg wrote:
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>>> On Sun,
On Mon, 24 Jan 2022 at 05:37, Dennis Lee Bieber wrote:
> Note that the comparison warns that /indexing/ in pandas can be slow.
> If your manipulation is always "apply operationX to columnY" it should be
> okay -- but "apply operationX to the nth row of columnY", and repeat for
> other rows
> On 25 Jan 2022, at 23:50, Tony Flury wrote:
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>> On 25/01/2022 22:28, Barry wrote:
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On 25 Jan 2022, at 14:50, Tony Flury via Python-list
wrote:
> On 20/01/2022 23:12, Chris Angelico wrote:
>>> On Fri, 21 Jan 2022 at 10:10, Greg Ewing
>>> wro
> On 26 Jan 2022, at 05:17, Dan Stromberg wrote:
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>> On Tue, Jan 25, 2022 at 6:41 PM Dan Stromberg wrote:
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>>> On Tue, Jan 25, 2022 at 2:23 PM Barry wrote:
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> On 25 Jan 2022, at 02:56, Dan Stromberg wrote:
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> On Sun, Jan 23, 2022 at 1:37 PM Barry wr
The convention for refcounting in CPython is that a function
takes borrowed references as arguments and returns a new
reference.
The 'self' argument passed in is a borrowed reference. If you
want to return it, you need to create a new reference by
increfing it.
So what you have written is just t
On 26/01/2022 08:20, Chris Angelico wrote:
On Wed, 26 Jan 2022 at 19:04, Tony Flury via Python-list
wrote:
So according to that I should increment twice if and only if the calling
code is using the result - which you can't tell in the C code - which is
very odd behaviour.
No, the return valu
On Wed, 26 Jan 2022 at 19:04, Tony Flury via Python-list
wrote:
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> So according to that I should increment twice if and only if the calling
> code is using the result - which you can't tell in the C code - which is
> very odd behaviour.
No, the return value from your C function will *always* hav
On 26/01/2022 01:29, MRAB wrote:
On 2022-01-25 23:50, Tony Flury via Python-list wrote:
On 25/01/2022 22:28, Barry wrote:
On 25 Jan 2022, at 14:50, Tony Flury via
Python-list wrote:
On 20/01/2022 23:12, Chris Angelico wrote:
On Fri, 21 Jan 2022 at 10:10, Greg
Ewing wrote:
On 20/01/
