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Please consider adding partialclass to functools

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Fwd: Pattern Matching Syntax

Neil Girdhar

2 May 2018 2 May '18

9:46 p.m.

Essentially, functools.partial is almost good enough for specifying some of the parameters of an object's initializer, but the partial object doesn't respond properly to issubclass. Please consider adding something like partialclass described here: https://stackoverflow.com/questions/38911146/python-equivalent-of-functools-... I ended up doing the same thing here: https://stackoverflow.com/questions/50143864/is-there-a-nice-way-to-partiall... Adding functools.partialclass would be similar to the addition of partialmethod in 3.4. Best, Neil

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Steven D'Aprano

3 May 3 May

2:41 a.m.

On Wed, May 02, 2018 at 02:46:09PM -0700, Neil Girdhar wrote:

Essentially, functools.partial is almost good enough for specifying some of the parameters of an object's initializer, but the partial object doesn't respond properly to issubclass. [...]

I think that ought to be an uncontroversial enough change that it can be taken to the bug tracker. I think you should just raise a feature enhancement request for 3.8 on the tracker, and link to this thread on the mailing list archives in case some discussion follows. -- Steve

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Neil Girdhar

6:34 p.m.

Done: https://bugs.python.org/issue33419 On Wed, May 2, 2018 at 10:42 PM Steven D'Aprano wrote:

On Wed, May 02, 2018 at 02:46:09PM -0700, Neil Girdhar wrote:

...
Essentially, functools.partial is almost good enough for specifying some of the parameters of an object's initializer, but the partial object doesn't respond properly to issubclass. [...]

I think that ought to be an uncontroversial enough change that it can be taken to the bug tracker. I think you should just raise a feature enhancement request for 3.8 on the tracker, and link to this thread on the mailing list archives in case some discussion follows.

-- Steve _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/

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Terry Reedy

9:43 p.m.

On 5/3/2018 2:34 PM, Neil Girdhar wrote:

Done: https://bugs.python.org/issue33419

I agree with Steven. Add the functools 'experts' as nosy. And add links to the SO items.

On Wed, May 2, 2018 at 10:42 PM Steven D'Aprano mailto:steve@pearwood.info> wrote:

On Wed, May 02, 2018 at 02:46:09PM -0700, Neil Girdhar wrote: > Essentially, functools.partial is almost good enough for specifying some of > the parameters of an object's initializer, but the partial object doesn't > respond properly to issubclass. [...]

I think that ought to be an uncontroversial enough change that it can be taken to the bug tracker. I think you should just raise a feature enhancement request for 3.8 on the tracker, and link to this thread on the mailing list archives in case some discussion follows.

-- Terry Jan Reedy

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Neil Girdhar

10 p.m.

Thank you. Done. On Thu, May 3, 2018 at 5:44 PM Terry Reedy wrote:

On 5/3/2018 2:34 PM, Neil Girdhar wrote:

...
Done: https://bugs.python.org/issue33419

I agree with Steven. Add the functools 'experts' as nosy. And add links to the SO items.

...
On Wed, May 2, 2018 at 10:42 PM Steven D'Aprano mailto:steve@pearwood.info> wrote:

On Wed, May 02, 2018 at 02:46:09PM -0700, Neil Girdhar wrote: > Essentially, functools.partial is almost good enough for specifying some of > the parameters of an object's initializer, but the partial object doesn't > respond properly to issubclass. [...]

I think that ought to be an uncontroversial enough change that it can be taken to the bug tracker. I think you should just raise a feature enhancement request for 3.8 on the tracker, and link to this thread on the mailing list archives in case some discussion follows.

-- Terry Jan Reedy

_______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/

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Neil Girdhar
Steven D'Aprano
Terry Reedy