[issue39732] plistlib should export UIDs in XML like Apple does

[Mingye Wang]

New submission from Mingye Wang <arthur200126 at gmail.com>:

Although there is no native UID type in Apple's XML format, Apple's NSKeyedArchiver still works with it because it converts the UID to a dict of {"CF$UID": int(some_uint64_val)}. Plistlib should do the same.

For a sample, see https://github.com/apple/swift-corelibs-foundation/blob/2a5bc4d8a0b073532e60410682f5eb8f00144870/Tests/Foundation/Resources/NSKeyedUnarchiver-ArrayTest.plist.

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components: Library (Lib)
messages: 362513
nosy: Artoria2e5
priority: normal
severity: normal
status: open
title: plistlib should export UIDs in XML like Apple does
type: behavior
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39732>
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