[issue18155] csv.Sniffer.has_header doesn't escape characters used in regex

[Vajrasky Kok]

Changes by Vajrasky Kok <sky.kok at speaklikeaking.com>:


Removed file: http://bugs.python.org/file30498/csv_has_header.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18155>
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