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

{"sheet":"Лист1","index":0,"n_rows":5,"n_cols":4,"rows_kept":5}
["Фамилия","класс","балл","статус"]
["Долгунова",7,9,"участник"]
["Убайдуллаев",7,8,"участник"]
["Шакирова",7,14,"участник"]
["Бормотин",8,13,"участник"]

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