{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Worksheet"],"read":"whole","date_system":"1900"}

{"sheet":"Worksheet","index":0,"n_rows":4,"n_cols":3,"rows_kept":4}
["Фамилия","Класс","Балл"]
["Гайнанова",5,21]
["Кашапова",4,15]
["Хакова",7,33]