[issue13149] optimization for append-only StringIO

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

It would be interesting to see how often the "bad" case triggers, i.e. that a write-only stringio sees any of the other methods invoked at all.
As a special case, you may consider that .truncate(0) doesn't really need to realize the buffer first.

I also wonder how much StringIO will be used in praxis, as opposed to BytesIO.

----------
nosy: +loewis

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13149>
_______________________________________