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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 getDiskPoolNames(rh):
 """ Obtain the list of disk pools known to the directory manager. Input: Request Handle with the following properties: function - 'GETHOST' subfunction - 'DISKPOOLNAMES' Output: Request Handle updated with the results. Return code - 0: ok, non-zero: error """


    rh.printSysLog("Enter getHost.getDiskPoolNames")

    parms = ["-q", "1", "-e", "3", "-T", "dummy"]
    results = invokeSMCLI(rh, "Image_Volume_Space_Query_DM", parms)
    if results['overallRC'] == 0:
        for line in results['response'].splitlines():
            poolName = line.partition(' ')[0]
            rh.printLn("N", poolName)
    else:
        # SMAPI API failed.
        rh.printLn("ES", results['response'])
        rh.updateResults(results)    # Use results from invokeSMCLI

    rh.printSysLog("Exit getHost.getDiskPoolNames, rc: " +
        str(rh.results['overallRC']))
    return rh.results['overallRC']