[issue8840] io.StringIO: truncate+print disabled in 3.1.2

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

This was an exceptional API change in 3.1.2: truncate() doesn't move the file pointer anymore, you have to do it yourself (with seek(0) in your case). I'm sorry for the inconvenience; the change was motivated by the desire of having an API more consistent with other file-handling APIs out there.

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nosy: +pakal, pitrou

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<http://bugs.python.org/issue8840>
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