On 2023-08-02, dn <pythonl...@danceswithmice.info> wrote:
> Can you please explain why a multi-part second-argument must be a tuple
> and not any other form of collection-type?
The following comment may hold a clue:
if (PyTuple_Check(cls)) {
/* Not a general sequence -- that opens up the road to
recursion and stack overflow. */
https://github.com/python/cpython/blob/main/Objects/abstract.c#L2684
Plus an almost total lack of demand for change I should think.
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