[Python-Dev] Usage of += on strings in loops in stdlib (original) (raw)
Maciej Fijalkowski fijall at gmail.com
Wed Feb 13 00:30:10 CET 2013
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On Wed, Feb 13, 2013 at 1:28 AM, Christian Heimes <christian at python.org> wrote:
Am 12.02.2013 22:32, schrieb Antoine Pitrou:
For the record, io.StringIO should be quite fast in 3.3. (except for the method call overhead that Guido is complaining about :-)) AFAIK it's not the actual call of the method that is slow, but rather attribute lookup and creation of bound method objects. If speed is of the essence, code can cache the method object locally: strio = io.StringIO() write = strio.write for element in elements: write(element) result = strio.getvalue()
And this is a great example of muddying code in stdlib for the sake of speeding up CPython.
Cheers, fijal
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