How to use the pythoms.psims.stringtodigit function in pythoms

"""
    Pulls all the attributes of an xml.dom.minidom xml branch.
    These are generally things like index, id, etc.

    :param xml.dom.minidom branch: An xml.dom.minidom object.
    :return: A dictionary of attributes with each key being the attribute name and its value being the value of that
        attribute.
    :rtype: dict

    **Notes**

    The script will attempt to convert any values to float or
    integer in order to reduce TypeErrors when trying to use
    the extracted values.
    """
    return {key: stringtodigit(val) for key, val in branch.attributes.items()}

def branch_cvparams(branch):
    """
    Interprets an xml branch as CVParams

    :param branch:
    :return: controlled value parameter set with values
    :rtype: CVParameterSet
    """
    out = {}
    for cvParam in branch.getElementsByTagName('cvParam'):
        acc = cvParam.getAttribute('accession')  # accession key
        out[acc] = {}
        for attribute, value in cvParam.attributes.items():  # pull all the attributes
            if attribute != 'accession':
                # attempt to convert to integer or float, keep as string otherwise
                out[acc][attribute] = stringtodigit(value)
    return CVParameterSet(**out)