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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 kill(path):
 """ Kills the process, if it still exists. :type path: str :param path: The name of the pidfile. """

    # try to read the pid from the pidfile
    pid = read(path)
    if pid is None:
        return

    # Try to kill the process.
    logging.info("Killing PID %s", pid)
    try:
        os.kill(pid, 9)
    except OSError as xxx_todo_changeme2:
        # re-raise if the error wasn't "No such process"
        (code, text) = xxx_todo_changeme2.args
        # re-raise if the error wasn't "No such process"
        if code != errno.ESRCH:
            raise