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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def status_mercurial(path, ignore_set, options):
 """Run hg status. Returns a 2-element tuple: * Text lines describing the status of the repository. * Empty sequence of subrepos, since hg does not support them. """

    lines = run(['hg', '--config', 'extensions.color=!', 'st'], cwd=path)
    subrepos = ()
    return [b' ' + l for l in lines if not l.startswith(b'?')], subrepos