Roman Suzi wrote: > On Tue, 17 Aug 2004, M.-A. Lemburg wrote: > > >>Michael Hudson wrote: >> >>>Anthony Baxter <anthony at interlink.com.au> writes: >>> >>>>A big +1 for a bytes() type, though. I'm not sure on the details, >>>>but it'd be nice if it was possible to pass a bytes() object to, >>>>for instance, write() directly. >>> >>>If bytes() doesn't implement the read buffer interface, someone >>>somewhere is going to need shooting :-) >> >>Is there any reason you cannot use buffer() ?! > > Is it mutable? > My guess: no: The buffer object itself can be read-only or read-write. Unfortunately, the buffer() built-in always returns read-only buffers. At C level it is easy to create a buffer object from a read-write capable object. >>>>d = u'123124' >>>>ddd[0] > > '1' > >>>>ddd[1] > > '\x00' > >>>>ddd[1] = '1' > > Traceback (most recent call last): > File "<stdin>", line 1, in ? > TypeError: buffer is read-only > > >>It already implements all the necessary things and has been >>available for many years. > > > It was in the shadows because we had byte-strings. Right, so why not revive it ?! Anyway, this whole discussion about a new bytes type doesn't really solve the problem that the b'...' literal was intended for: that of having a nice way to define (read-only) 8-bit binary string literals. We already have a number of read-write types for storing binary data, e.g. arrays, cStringIO and buffers. Inventing yet another way to spell binary data won't make life easier. However, what will be missing is a nice way to spell read-only binary data. Since 'tada' will return a Unicode object in Py3k, I think we should reuse the existing 8-bit string object under the new literal constructor b'tada\x00' (and apply the same source code encoding semantics we apply today for 'tada\x00'). -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Aug 17 2004) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! ::::
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