[issue18297] In range.sample() correct the ValueError message for negative k

[py.user]

Changes by py.user <bugzilla-mail-box at yandex.ru>:


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keywords: +patch
Added file: http://bugs.python.org/file30697/issue18297.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18297>
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