Does anyone recognise this?

[Phaedrus]

I've a feeling this text was originally compiled by someone else for another purpose, but I can't find the original author(s) to ask permission/credit them appropriately/etc.  Can anyone help?

[TNTease]

might help if you said what program it is from...some further info on the circumstances...

[Yusif]

the type_ext_map is a python dictionary that maps file signatures (or magic numbers) to their corresponding file extensions