import glob


def find_excel(directory="./"):
    """ Find the excel report. """
    fcybl_files = glob.glob('{}/{}'.format(directory, './FCYBL*.xlsx'))
    if (len(fcybl_files) != 1):
        raise RuntimeError("Expected to find 1 FCYBL file, but found the following: {}".format(fcybl_files))
    return fcybl_files[0]