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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 grouplabelencode(data, mapping, nacode=None, nastate=False):
 """Encode data array with grouped labels Parameters: data : list array with labels mapping : dict, list of list the index of each element is used as encoding. Each element is a single label (str) or list of labels that are mapped to the encoding. nacode : integer (Default: None) Encoding for unmapped states. nastate : bool If False (Default) unmatched data labels are encoded as nacode. If nastate=True (and nacode=None) then unmatched data labels are encoded with the integer nacode=len(mapping). """

    # What value is used for missing data?
    if nastate:
        if nacode is None:
            nacode = len(mapping)

    # Process depending on the data type of the data mapping variable
    if isinstance(mapping, list):
        m = mapping
        e = range(len(mapping))
    elif isinstance(mapping, dict):
        m = list(mapping.values())
        e = list(mapping.keys())
    else:
        raise Exception("'data' must be list-of-list or dict.")

    # Loop over 'data' array
    return grouplabelencode_loop(data, m, e, nacode=nacode)