    if users[col].dtype == np.object:
        users = users[users[col].map(len) > 0]
logging.info("   -> Without empty strings: %d records", len(users))
# # 8. Write results
logging.info("8. WRITING result")
logging.info("   ColDelimiter=%s | RowDelimiter=%s",
             DST_COL_DELIMITER, DST_ROW_DELIMITER)
logging.info("   Export columns: %s", DST_COLS_OUTPUT)
DST_FILE_NAME = ".".join(os.path.basename(users_file).split(".")[:-1])
DST_FILE_EXT = os.path.basename(users_file).split(".")[-1]