How to use the pycldf.Wordlist function in pycldf

form : str (default="ipa")
        The column in which the unsegmented phonetic strings are stored.
    note : str (default=None)
        The column in which you store your comments.
    form_in_source : str (default=None)
        The column in which you store the original form in the source.
    source : str (default=None)
        The column in which you store your source information. 
    alignment : str (default="alignment")
        The column in which you store the alignments.
    """
    if not cldf:
        raise ValueError('The package pycldf needs to be installed')

    # create cldf-dataset
    ds = CLDF_Wordlist.in_dir(path)
    # add sources if they are available
    ds.add_sources(
            read_text(source_path) if source_path else '')
    # add components
    ds.add_component('LanguageTable')
    ds.add_component('ParameterTable', 'Concepticon_ID')
    ds.add_component('CognateTable')
    ds.add_columns('FormTable', 'form_in_source')

    languages, parameters, forms, cognates = {}, {}, [], []
    for idx in wordlist:
        lid = slug(wordlist[idx, 'doculect'])
        if lid not in languages:
            languages[lid] = dict(
                    ID=lid,
                    Name=wordlist[idx, 'doculect'],