Paul Moore wrote: > > > Enough of the abstract. As a concrete example, suppose I have a (byte) > string in my program containing some binary data - an ID3 header, or a > TCP packet, or whatever. It doesn't really matter. Does your proposal > offer anything to me in how I might manipulate that data (assuming I'm > not using NumPy)? (I'm not insisting that it should, I'm just trying > to understand the scope of the PEP). >
What do you mean by "manipulate the data." The proposal for a data-format object would help you describe that data in a standard way and therefore share that data between several library that would be able to understand the data (because they all use and/or understand the default Python way to handle data-formats). It would be up to the other packages to "manipulate" the data. So, what you would be able to do is take your byte-string and create a buffer object which you could then share with other packages: Example: b = buffer(bytestr, format=data_format_object) Now. a = numpy.frombuffer(b) a['field1'] # prints data stored in the field named "field1" etc. Or. cobj = ctypes.frombuffer(b) # Now, cobj is a ctypes object that is basically a "structure" that can be passed # directly to your C-code. Does this help? -Travis _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
