The limited C API has the function PySequence_Fast() which should be used with these macros:

• PySequence_Fast_GET_SIZE()
• PySequence_Fast_GET_ITEM()
• PySequence_Fast_ITEMS()

Problem: none of these 3 macros work with the limited C API. The whole PySequence_Fast() API is broken in the limited C API.

Example:

#define PySequence_Fast_GET_ITEM(o, i)\
     (PyList_Check(o) ? PyList_GET_ITEM((o), (i)) : PyTuple_GET_ITEM((o), (i)))

PyList_GET_ITEM() and PyTuple_GET_ITEM() are not part of the limited C API, so PySequence_Fast_GET_ITEM() cannot be used in the limited C API.

I propose to remove PySequence_Fast() and these 3 macros from the limited C API, since they are incompatible and never worked with the limited C API.

• Issue
• Pull request

Vote:

• @encukou
• @erlend-aasland
• @mdboom
• @serhiy-storchaka
• @vstinner
• @zooba