[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Anthony Tuininga]

Anthony Tuininga  added the comment:

Any progress on this?

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Alexander Belopolsky]

Change by Alexander Belopolsky :


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dependencies: +Add timezone support to datetime C API

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[STINNER Victor]

Change by STINNER Victor :


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components: +C API

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Paul Ganssle]

Paul Ganssle  added the comment:

Hmm. I never noticed this. In the past I have used the (undocumented) 
PyDateTimeAPI struct, which the official macros wrap. I'm not sure how official 
that struct is considering it doesn't show up in the documentation.

I agree that it should be possible to construct TZ-aware datetimes using the 
official C API, so I guess the question is whether to add a bunch more macros 
or document the existing struct.

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nosy: +p-ganssle

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Xiang Zhang]

Changes by Xiang Zhang :


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nosy: +belopolsky

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Daniel Lenski]

Changes by Daniel Lenski :


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nosy: +dlenski

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[issue30155] Add ability to get/set tzinfo on datetime instances in C API

[Anthony Tuininga]

New submission from Anthony Tuininga:

Right now there is no documented way to create a datetime instance with a 
tzinfo instance. The documented macros all hard code the value Py_None for the 
tzinfo parameter. Using the PyObject_Call() method instead of the macro for 
creating a datetime instance is ~5x slower.

In addition, there is no macro or method for getting the tzinfo from an 
existing datetime instance. Perhaps creating DATE_GET_TZINFO and 
TIME_GET_TZINFO would be acceptable?

The enhancement 10381 (http://bugs.python.org/issue10381) would also be needed.

I can provide a GitHub PR if that would be helpful. I first want to make sure 
that such an effort would be appreciated!

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components: Library (Lib)
messages: 292230
nosy: atuining
priority: normal
severity: normal
status: open
title: Add ability to get/set tzinfo on datetime instances in C API
type: enhancement
versions: Python 3.6

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