Wrapping a C library in Python
Roy Smith
roy at panix.com
Thu Nov 18 20:10:35 EST 2004
I've got a C library with about 50 calls in it that I want to wrap in
Python. I know I could use some tool like SWIG, but that will give me a
too-literal translation; I want to make some modifications along the way
to make the interface more Pythonic.
For example, all of these functions return an error code (typically just
errno passed along, but not always). They all accept as one of their
arguments a pointer to someplace to store their result. I want to
change all that to returning the result directly and throwing exceptions.
I also want to mutate some of the return types. A common way these
functions return a set of values is a pair of arrays of strings, forming
key-value pairs. In Python, it would make sense to return this as a
dictionary.
I know what I'm describing is kind of vague, but are there tools around
which might help automate (at least in part) this translation process?
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