[issue40476] Write file failed on OS X 10.15.4

[韩振宇]

Change by 韩振宇 <0oshowero0 at gmail.com>:


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components: +macOS
nosy: +ned.deily, ronaldoussoren
type:  -> behavior

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40476>
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