Message 235244 - Python tracker
The call to PyBuffer_IsContiguous() (see patch) is redundant: PyBUF_WRITABLE is a flag that can be added to any buffer request. The real request here is (PyBUF_SIMPLE|PyBUF_WRITABLE), which is equal to PyBUF_WRITABLE since PyBUF_SIMPLE==0. PyBUF_SIMPLE implies C-contiguous with format 'B'. Perhaps the check was added for broken buffer providers, but I think at some point we should assume correct providers.