symbolic interpretation of hex-data

[dr_mabuse]

hi folks !

i am relativly new to python and i like to develop a tool for interpreting
hexadezimal-data with symbolic and structured modes and i like to know
whether someone has any experiences with it ?
to be more precise, this is my problem:
i have some complex modes definied in another programming language and they
may be quite complex and also feature different memory layouts (LSB high or
LSB low). my tool now needs to parse the listing output of the other
language generate a database for the complex modes and then needs to read a
hexadezimal input and apply a given mode to that data.
any suggestions ?

thanks and bye
olaf