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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 vmstat(stat):
 """Run vmstat and get a particular statistic. Args: stat: The statistic that we are interested in retrieving. Returns: The parsed output. """

    out = subprocess.check_output(["vmstat", "-s"])
    stat = stat.encode("ascii")
    for line in out.split(b"\n"):
        line = line.strip()
        if stat in line:
            return int(line.split(b" ")[0])
    raise ValueError("Can't find {} in 'vmstat' output.".format(stat))