[issue16957] shutil.which() shouldn't look in working directory on unix-y systems

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

No, it should be

    if os.path.dirname(cmd):
        if _access_check(cmd, mode):
            return cmd
        return None

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16957>
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