{"text_format":"3","workbook":"xlsx","n_sheets":3,"sheets":["Лист1","Лист2","Лист3"],"read":"whole","date_system":"1900"}

{"sheet":"Лист1","index":0,"n_rows":8,"n_cols":3,"rows_kept":8}
["Фамилия","класс","балл"]
["Аксакова",6,10]
["Долгунова",7,21]
["Терентьев",6,13]
["Кустовский",6,13]
["Убайдуллаев",7,7]
["Шакирова",7,18]
["Бормотин",8,12]

{"sheet":"Лист2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0}

{"sheet":"Лист3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0}