[docs] [issue20699] Document that binary IO classes work with bytes-likes objects

Martin Panter report at bugs.python.org
Wed Jun 8 01:41:28 EDT 2016

Martin Panter added the comment:

New patch that I plan to commit:

* Use bytes instead of str
* bytes, bytearray or memoryview for readinto() methods
* bytes or memoryview for write() methods
* Added single “Changed in version 2.7” notice under the IOBase class (rather than every version of readinto and write)
* Since we only require 1-D byte array memoryviews, I resurrected the len(b) text
* Removed outdated XXX comment about supporting buffer API, since bytearray and memoryview of bytes is now all that is required

stage: patch review -> commit review
Added file: http://bugs.python.org/file43301/bytes-like-param.py2.v9.patch

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