[docs] [issue20423] io.StringIO newline param has wrong default

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

On other hand, may be the behavior of io.StringIO is wrong. Because it is different from io.TextIOWrapper.

>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm')).readlines()
['abc\n', 'def\n', 'ghi\n', 'klm']
>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm'), newline=None).readlines()
['abc\n', 'def\n', 'ghi\n', 'klm']
>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm'), newline='').readlines()
['abc\r\n', 'def\n', 'ghi\r', 'klm']
>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm'), newline='\n').readlines()
['abc\r\n', 'def\n', 'ghi\rklm']
>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm'), newline='\r').readlines()
['abc\r', '\ndef\nghi\r', 'klm']
>>> io.TextIOWrapper(io.BytesIO(b'abc\r\ndef\nghi\rklm'), newline='\r\n').readlines()
['abc\r\n', 'def\nghi\rklm']

----------
nosy: +benjamin.peterson, hynek, pitrou, stutzbach

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20423>
_______________________________________