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Argument Clinic: the Py_buffer converter only accepts None as the default value #144545
The Py_buffer converter only accepts None as the default value, even if None is not valid value for Py_buffer. As result, you need to use tricks for optional Py_buffer parameters:
Py_buffer(py_default="b''") = None
or
Py_buffer(py_default="<unrepresentable>") = None
and then check if arg->buf is NULL.
It should support NULL (for "unrepresentable") and arbitrary bytes literals (or at least b'') as default values.
Bug report
The
Py_bufferconverter only accepts None as the default value, even if None is not valid value forPy_buffer. As result, you need to use tricks for optionalPy_bufferparameters:or
and then check if
arg->bufis NULL.It should support NULL (for "unrepresentable") and arbitrary bytes literals (or at least
b'') as default values.Linked PRs