Author vstinner
Recipients Guido.van.Rossum, Mark.Shannon, christian.heimes, corona10, erlendaasland, gvanrossum, pablogsal, serhiy.storchaka, shihai1991, shreyanavigyan, vstinner
Date 2021-04-29.14:59:29
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1619708369.98.0.0331315724797.issue43908@roundup.psfhosted.org>
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check_set_special_type_attr() is used to prevent setting the following attributes:

* __name__
* __qualname__
* __module__
* __bases__
* __doc__

Right now, I cannot set the attribues on array.array type:

$ ./python
Python 3.10.0a7+ (heads/debug_doc2-dirty:0623fdb60d, Apr 29 2021, 12:06:18)
>>> import array

>>> array.array.__name__ = 'newname'
TypeError: can't set attributes of built-in/extension type 'array.array'

>>> array.array.__qualname__ = 'newname'
TypeError: can't set attributes of built-in/extension type 'array.array'

>>> array.array.__module__ = 'new module'
TypeError: can't set attributes of built-in/extension type 'array.array'

>>> array.array.__bases__ = (int,)
TypeError: can't set attributes of built-in/extension type 'array.array'

>>> array.array.__doc__ = 'doc'
TypeError: can't set attributes of built-in/extension type 'array.array'

I guess that type_setattro() is used and it checks for Py_TPFLAGS_IMMUTABLETYPE flag early.
History
Date User Action Args
2021-04-29 14:59:30vstinnersetrecipients: + vstinner, gvanrossum, christian.heimes, Mark.Shannon, serhiy.storchaka, Guido.van.Rossum, corona10, pablogsal, shihai1991, erlendaasland, shreyanavigyan
2021-04-29 14:59:29vstinnersetmessageid: <1619708369.98.0.0331315724797.issue43908@roundup.psfhosted.org>
2021-04-29 14:59:29vstinnerlinkissue43908 messages
2021-04-29 14:59:29vstinnercreate