How to use the bioframe.formats.read_table function in bioframe

def fetch_ucsc_centromeres(db,**kwargs):
    return read_table(
        'http://hgdownload.cse.ucsc.edu/goldenPath/{}/database/centromeres.txt.gz'.format(db),
        schema='centromeres',
        **kwargs)

def fetch_ucsc_cytoband(db, ideo=True, **kwargs):
    if ideo:
        return read_table(
            'http://hgdownload.cse.ucsc.edu/goldenPath/{}/database/cytoBandIdeo.txt.gz'.format(db),
            schema='cytoband',
            **kwargs)
    else:
        return read_table(
            'http://hgdownload.cse.ucsc.edu/goldenPath/{}/database/cytoBand.txt.gz'.format(db),
            schema='cytoband',
            **kwargs)

    path[:-12]: lambda : read_table(
        pkg_resources.resource_filename(__name__, 'data/'+path),
        SCHEMAS['bed3'])
    for path in pkg_resources.resource_listdir(__name__, 'data/')