[issue3476] BufferedWriter not thread-safe

[Antoine Pitrou]

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

Selon Benjamin Peterson <report at bugs.python.org>:
>
> Benjamin Peterson <musiccomposition at gmail.com> added the comment:
>
> It seems that as with the quadratic binary buffered reading, the best
> solution is the list of bytes which should be especially helped by your
> bytes joining optimization.

I don't really know. The logic is quite different (and harder to get right) than
in BufferedReader. I might try to write a list-of-bytes version and do some
timings, but it's not trivial... I should first compare against the current
version.

Also, an advantage of using a fixed-size bytearray is that it more closely
mimicks what will have to be written for an efficient C implementation.

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<http://bugs.python.org/issue3476>
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