{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":3,"n_cols":6,"rows_kept":3,"merged":[[0,0,0,5],[1,0,1,5]]}
["签  到  表"]
["（姓名：            学号：            ）"]
["日期","星期","上午","下午","小时数","签名"]