{"text_format":"3","workbook":"xls","n_sheets":1,"sheets":["Sheet"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet","index":0,"n_rows":3,"n_cols":3,"rows_kept":3,"flags":["formulas_cached_only"]}
["A","B","C"]
[1,2,3]
[4,5,6]