[issue39600] idle_test: test_fontlist_key() fails if two font families have the same name

[Terry J. Reedy]

Change by Terry J. Reedy <tjreedy at udel.edu>:


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pull_requests: +17823
pull_request: https://github.com/python/cpython/pull/18449

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39600>
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