Bugs item #1416477, was opened at 2006-01-27 14:51
Message generated for change (Comment added) made by gbrandl
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Category: None
Group: Python 2.4
>Status: Closed
>Resolution: Out of Date
Priority: 5
Submitted By: Michael Kerrin (mkerrin)
Assigned to: Raymond Hettinger (rhettinger)
Summary: Inconsistency between StringIO and cStringIO
Initial Comment:
The readline method for StringIO defalt argument for
the size arguement is None while for all other
file-like objects it is -1. So if we pass in -1 to the
StringIO readline method, all lines are returned, again
inconsistent with the other file-like objects, and if
we pass in None to any other file-like object we get a
TypeError, int required.
The attached python script is a very simple example of
what I mean.
Note that this is causing me a lot of grief in trying
to get tests to pass for a simple fix to an open source
project.
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>Comment By: Georg Brandl (gbrandl)
Date: 2006-03-18 08:24
Message:
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Closing then.
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Comment By: Kent Hsu (cphsu)
Date: 2006-03-06 05:16
Message:
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Sorry, it seems the bug has been fixed in 2.4.
>>>>>>>>>>>>>>>>>>>
>>> import cStringIO as c
>>> sio = c.StringIO()
>>> sio.write("aaaaa")
>>> sio.truncate(0)
>>> print sio.getvalue()
>>> sio.write("bbbbb")
>>> print sio.getvalue()
aaaaabbbbb
which I get in StringIO module is "bbbbb".
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Comment By: Kent Hsu (cphsu)
Date: 2006-03-06 05:04
Message:
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BTW, another inconsistency between StringIO and cStringIO :-)
>>> import cStringIO as c
>>> sio = c.StringIO()
>>> sio.write("aaaaa")
>>> sio.truncate(0)
>>> print sio.getvalue()
>>> sio.write("bbbbb")
>>> print sio.getvalue()
aaaaabbbbb
which I get in StringIO module is "bbbbb".
----------------------------------------------------------------------
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