[New-bugs-announce] [issue40400] Mac build-installer.py doesn't support new plist format

[h2a10]

New submission from h2a10 <arieff.family at gmail.com>:

when you run cpython/Mac/BuildScript/build-installer.py with python 3.9.0 it failed with the following error
 from plistlib import Plist
ImportError: cannot import name 'Plist' from 'plistlib'

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components: macOS
messages: 367325
nosy: h2a10, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: Mac build-installer.py doesn't support new plist format
type: compile error
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40400>
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