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

{"sheet":"Лист1","index":0,"n_rows":4,"n_cols":4,"rows_kept":4}
["Фамилия","класс","балл","статус"]
["Аксакова",6,6,"участник"]
["Шакирова",7,32,"участник"]
["Бормотин",8,7,"участник"]

{"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}