[issue41421] Random.paretovariate sometimes raises ZeroDivisionError for small alpha

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41421>
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