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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 cli():
 """Command-line script to print a GO term's lower-level hierarchy."""

    objcli = WrHierCli(sys.argv[1:])
    fouts_txt = objcli.get_fouts()
    if fouts_txt:
        for fout_txt in fouts_txt:
            objcli.wrtxt_hier(fout_txt)
    else:
        objcli.prt_hier(sys.stdout)