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bpo-44490: Add __parameters__ and __getitem__ to types.Union (GH-26980)

Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>
Y
Yurii Karabas committed
c45fa1a5d9b419cf13ad4b5a7cb453956495b83e
Parent: 8b849ea
Committed by GitHub <noreply@github.com> on 7/6/2021, 6:04:33 PM