[issue37476] Adding a unit test of unicode in test_unicode.py

[hai shi]

New submission from hai shi <shihai1991 at 126.com>:

As title, Adding a unit test of unicode in test_unicode.py.

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components: Tests
messages: 347059
nosy: shihai1991
priority: normal
severity: normal
status: open
title: Adding a unit test of unicode in test_unicode.py

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37476>
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