[issue21995] Idle: pseudofiles have no buffer attribute.

Serhiy Storchaka added the comment: Yet one example of test stream that has no buffer - stdprinter used as sys.stderr on early stage of Python startup. -- ___ Python tracker ___

[issue21995] Idle: pseudofiles have no buffer attribute.

Terry J. Reedy added the comment: Related #23220 has draft of part of what pushed. I want to do more on the subject. -- assignee: docs@python -> terry.reedy ___ Python tracker

[issue21995] Idle: pseudofiles have no buffer attribute.

Terry J. Reedy added the comment: I believe this issue was derived from another were someone complained about something else being missing. I will just look into the other two and see if they are supposed to be there. -- ___ Python tracker

[issue21995] Idle: pseudofiles have no buffer attribute.

Serhiy Storchaka added the comment: https://docs.python.org/3/library/io.html#io.TextIOBase.buffer """buffer The underlying binary buffer (a BufferedIOBase instance) that TextIOBase deals with. This is not part of the TextIOBase API and may not exist in some implementations.""" It is common t

[issue21995] Idle: pseudofiles have no buffer attribute.

Roundup Robot added the comment: New changeset ac6ade0c5927 by Terry Jan Reedy in branch '2.7': Issue 21995: Explain some differences between IDLE and console Python. https://hg.python.org/cpython/rev/ac6ade0c5927 New changeset ca6c9cc77c20 by Terry Jan Reedy in branch '3.4': Issue 21995: Explai

[issue21995] Idle: pseudofiles have no buffer attribute.

New submission from Terry J. Reedy: sys.stdin on 3.4.1 is also 'missing' (among public names) 'line_buffering' (True) and 'mode' ('r'). It seems that these could be trivially added, so the focus of this issue is 'buffer'. The associated .detach method is a no-op, (It is also a bit dangerous fo