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

{"sheet":"Лист1","index":0,"n_rows":7,"n_cols":3,"rows_kept":7}
["Фамилия","класс","балл"]
["Аксакова",7,45]
["Кустовский",7,44]
["Терентьев",7,58]
["Шакирова",8,48]
["Бормоти",9,45]
["Долгунова",8,37]

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