Java to Python translation

[vio]

Greetings,

I am a newbie at Flex-Bison. But
I need to translate a (rather voluminous 100MB) java program to python. After a
few searches on google, apparently the best tools for this task are Lex-Yacc
(Flex-Bison on linux). While I am chewing on the Lex-YACC HOWTO, I would be very

interested in hearing of others' successful experiences/feedback at this. Any
pointers of interest would similarily be appreciated (java python grammar,
etc.).

Obviously, telling me that Flex-Bison are not the right tools for my translation
task
would be similarly appreciated.

Many thanks,
Vio