On 4/6/2011 1:24 PM, Maciej Fijalkowski wrote:
No worries, it wasn't even my code. Someone donated it. The was a discusion on python-dev and collective agreement to allow it to have semantic differences that would let it run faster. IIRC, the final call was made by Uncle Timmy.
...
And, for this module, a decision was made for the C code to support only lists eventhough the pure python version supports any sequence."
I believe that at the time of that decision, the Python code was only intended for humans, like the Python (near) equivalents in the itertools docs to C-coded itertool functions. Now that we are aiming to have stdlib Python code be a reference implementation for all interpreters, that decision should be revisited. Either the C code should be generalized to sequences or the Python code specialized to lists, making sure the doc matches either way.
The idea of the PEP is for C code to be guaranteed to be the same as Python where it matters to people.
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