custom file format read and write interface (python based)

I've a PDF with specification of a file format. I'm searching for a python module which can read from files in that format and show the data inside the file in a easy to use for upper levels. On the other side, it may be possible to create a record from scratch. The format definition is: a file is a single RECORD, every record is made by some SECTIONs. Every section has a HEADER and after exposes some data defined in the PDF. The choice will be made on how you propose the interface for the implementation (just sample code/function names ) ## Deliverables I've a PDF with specification of a file format. I'm searching for a python module which can read from files in that format and show the data inside the file in a easy to use for upper levels. On the other side, it may be possible to create a record from scratch. The choice will be made on how you propose the interface for the implementation (just sample code/function names ) All error/warning must raise an exception Attached PDF of format definition. I could provide sample files on request. for any doubt, feel free to ask. Note: for performance issues, we need the CRC function to have a look-up table, and not use the CRC algorithm provided in the PDF. See [login to view URL] for details on how that's done. The python module must pay attention on endianess for any info you think is missing, ask before place a bid.