New submission from Armin Rigo <ar...@users.sourceforge.net>:
The behavior (tested in 3.6 and 3.9) of io.BytesIO().getbuffer() gives a unexpected exception message: >>> b = io.BytesIO() >>> b.write(b'abc') 3 >>> buf = b.getbuffer() >>> b.seek(0) 0 >>> b.write(b'?') # or anything up to 3 bytes BufferError: Existing exports of data: object cannot be re-sized The error message pretends that the problem is in resizing the BytesIO object, but the write() is not actually causing any resize. I am not sure if the bug is a wrong error message (and all writes are supposed to be forbidden) or a wrongly forbidden write() (after all, we can use the buffer itself to write into the same area of memory). ---------- components: Interpreter Core messages: 372237 nosy: arigo priority: normal severity: normal stage: test needed status: open title: confusing BufferError: Existing exports of data: object cannot be re-sized type: behavior _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue41097> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
