[issue36299] array: Deprecate 'u' type in array module

Inada Naoki added the comment: While array('u') doesn't use deprecated API with GH-19653, I still don't like 'u' because: * I don't have any reason to use platform dependant wchar_t. [1] * It is not consistent with PEP-3118. [1]:

[issue36299] array: Deprecate 'u' type in array module

Terry J. Reedy added the comment: Should this issue be closed, possibly as superseded by #36346, the issue for the new PR-19653? -- ___ Python tracker ___

[issue36299] array: Deprecate 'u' type in array module

Inada Naoki added the comment: I closed GH-12497 (Py_UNICODE -> Py_UCS4). I created GH-19653 (Py_UNICODE -> wchar_t) instead. -- ___ Python tracker ___

[issue36299] array: Deprecate 'u' type in array module

Change by STINNER Victor : -- nosy: -vstinner ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue36299] array: Deprecate 'u' type in array module

Stefan Krah added the comment: The funny thing is that array() already knows this: >>> import array >>> a = array.array("u", "123") >>> memoryview(a).format 'w' -- ___ Python tracker

[issue36299] array: Deprecate 'u' type in array module

Stefan Krah added the comment: array() uses struct module characters except for 'u'. PEP-3118 was supposed to be implemented in the struct module. If array() continues to use 'u', the only sensible thing would be to remove (or rename) 'a', 'u' and 'w' from PEP-3118. --

[issue36299] array: Deprecate 'u' type in array module

Serhiy Storchaka added the comment: array('u') is not tied with the legacy Unicode C API. It is possible to use the modern wchar_t based Unicode C API for it. See issue36346. There are benefits from getting rid of the legacy Unicode C API, but not from array('u'). -- nosy:

[issue36299] array: Deprecate 'u' type in array module

Stefan Krah added the comment: Just to demonstrate what the format would look like, this is working for an array of fixed bytes: >>> x = xnd([b"123", b"23456"], dtype="fixed_bytes(size=10)") >>> memoryview(x).format '10s' So the formats in the previous message would be '10u' and '10w'.

[issue36299] array: Deprecate 'u' type in array module

Stefan Krah added the comment: I think the problem is still whether to use 'u' == UCS2 and 'w' == UCS4 like in PEP-3118. For the project I'm currently working on I'd need these for buffer exports: >>> from xnd import * >>> x = xnd(["abc", "xyz"], dtype="fixed_string(10, 'utf16')") >>> y =

[issue36299] array: Deprecate 'u' type in array module

Change by Inada Naoki : -- nosy: +ncoghlan, skrah, vstinner stage: patch review -> title: Deprecate 'u' type in array module -> array: Deprecate 'u' type in array module ___ Python tracker