issue: Permissions in odfpy

[shruti surve]

hey,
i am using odfpy and  generating spreadsheet in open office..but nobody
should modify the file..so can anybody tell me how can we give permissions
(read only) to spreadsheet in odfpy??..i have change the properties of my
normal open office spreadsheet file and made it read only..n also extracted
it..but in conteny.xml also i am not finding any property which can be used
in odfpy...so please give me some solution..


regards
shruti surve
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