def raw_abundance(biomf, sampleIDs=None, sample_abd=True):
    """
    Calculate the total number of sequences in each OTU or SampleID.

    :type biomf: A BIOM file.
    :param biomf: OTU table format.

    :type sampleIDs: List
    :param sampleIDs: A list of column id's from BIOM format OTU table. By default, the
                      list has been set to None.

    :type sample_abd: Boolean
    :param sample_abd: A boolean operator to provide output for OTUID's or SampleID's. By
                       default, the output will be provided for SampleID's.

    :rtype: dict
    :return: Returns a dictionary keyed on either OTUID's or SampleIDs and their
             respective abundance as values.
    """
    results = defaultdict(int)
    if sampleIDs is None:
        sampleIDs = biomf.ids()
    else:
        try:
            for sid in sampleIDs:
                assert sid in biomf.ids()
        except AssertionError:
            raise ValueError(
                "\nError while calculating raw total abundances: The sampleIDs provided "
                "do not match the sampleIDs in biom file. Please double check the "
                "sampleIDs provided.\n")
    otuIDs = biomf.ids(axis="observation")

    for sampleID in sampleIDs:
        for otuID in otuIDs:
            abd = biomf.get_value_by_ids(otuID, sampleID)
            if sample_abd:
                results[sampleID] += abd
            else:
                results[otuID] += abd
    return results
Calculate the total number of sequences in each OTU or SampleID.

    :type biomf: A BIOM file.
    :param biomf: OTU table format.

    :type sampleIDs: List
    :param sampleIDs: A list of column id's from BIOM format OTU table. By default, the
                      list has been set to None.

    :type sample_abd: Boolean
    :param sample_abd: A boolean operator to provide output for OTUID's or SampleID's. By
                       default, the output will be provided for SampleID's.

    :rtype: dict
    :return: Returns a dictionary keyed on either OTUID's or SampleIDs and their
             respective abundance as values.