[Python-Dev] Crazy idea for str.join (original) (raw)

Josiah Carlson jcarlson at uci.edu
Sun Apr 30 00:11:58 CEST 2006

Thomas Heller <theller at python.net> wrote:

Fredrik Lundh wrote: > Josiah Carlson wrote: > >> At least for the examples of buffers that I've seen, using the buffer >> interface for objects that support it is equivalent to automatically >> applying str() to them. This is, strictly speaking, an optimization. > > >>> a = array.array("i", [1, 2, 3]) > >>> str(a) > "array('i', [1, 2, 3])" > >>> str(buffer(a)) > '\x01\x00\x00\x00\x02\x00\x00\x00\x03\x00\x00\x00' or: thomas at tubu:~$ python2.4 Python 2.4.2 (#2, Sep 30 2005, 22:19:27) [GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> str(buffer(u"abc")) 'a\x00\x00\x00b\x00\x00\x00c\x00\x00\x00' >>>

Hrm, those are interesting examples. It would seem as though checking to see if a passed object was a buffer itself, rather than whether it supported the buffer interface, would be more correct.

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