[New-bugs-announce] [issue42423] Support passing single class to PyType_FromSpecWithBases and PyType_FromModuleAndSpec

[Serhiy Storchaka]

New submission from Serhiy Storchaka <storchaka+cpython at gmail.com>:

It is common that class have a single base class. PyType_FromModuleAndSpec() is only called with NULL as bases (that means inheriting object) in the stdlib, and PyType_FromSpecWithBases() is called with a 1-tuple as bases all three times (not counting tests).

Since it is a common case, PyErr_NewException() accept both a tuple and a single class as the base argument. I propose to accept a single class also in PyType_FromSpecWithBases() and PyType_FromModuleAndSpec().

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components: C API
messages: 381542
nosy: christian.heimes, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Support passing single class to PyType_FromSpecWithBases and PyType_FromModuleAndSpec
type: enhancement
versions: Python 3.10

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42423>
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