mmap only supports string

[Neal Becker]

Problem is, AFAIK a string can only be created as a copy of some other data. Say I'd like to take some large object and read/write to/from mmap object. A good way to do this would be the buffer protocol. Unfortunately, mmap only supports string. A string could only be created after copying the original object AFAIK.

I think mmap should work directly with buffer protocol, so it could directly read/write with objects supporting buffer protocol. Specifically, mmap slice should support buffer protocol.

 

[Aaron Brady]

Problem is, AFAIK a string can only be created as a copy of some other data.  Say I'd like to take some large object and read/write to/from mmap object.  A good way to do this would be the buffer protocol.  Unfortunately, mmap only supports string.  A string could only be created after copying the original object AFAIK.

I think mmap should work directly with buffer protocol, so it could directly read/write with objects supporting buffer protocol.  Specifically, mmap slice should support buffer protocol.

Hi. It is a weakness. Strings are supposed to be read-only in
Python: so. You can use and get the PyObject_AsWriteBuffer C function
from 'ctypes' if you are interested.