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Document the Py_SIZE() macro. #66148
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The Py_SIZE() macro is not documented. It should be. It is very useful along with PyList_New(positive_number) after using PyList_SET_ITEM() to fill in up to the first positive_number elements of a list object in the most optimal manner by avoiding numerous redundant array resizes and error checks along the away. The Py_SIZE() macro was introduced (in 2.6 I believe) and is specifically intended for use as an lvalue (see http://bugs.python.org/issue1724 to confirm that). It currently has uses in several places in CPython's core and modules as well as within some third party extension modules and tools such as Cython). |
Py_SIZE: https://docs.python.org/3.5/c-api/structures.html#c.Py_SIZE I think they're documented now, so I guess the issue can be closed. |
Thanks for triaging! The relevant commit is 760c5cfacbaa. |
New changeset 63183596db79 by Gregory P. Smith in branch '2.7': |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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