On Tue, Mar 18, 2008 at 3:54 PM, David Wolever <[EMAIL PROTECTED]> wrote: > I'm working on #2171 -- putting map, filter, zip in 2.6's > future_builtins. > It has been suggested that it would be simplest to just return > itertools.(imap, izip, ifilter), which is what py3k/Python/ > bltinmodule.c, revision 61356 did. > > The advantage of this is that it's really easy and the behaviour > seems to be identical. > The disadvantage is that the two aren't identical: > >>> type(map(lambda x: x, [1, 2, 3])) # Python 3 > <type 'map'> > >>> type(map(lambda x: x, [1, 2, 3])) == map > True > > >>> type(map(lambda x: x, [1, 2, 3])) # Python 2.6, with the patch > <type 'itertools.imap'> > >>> type(map(lambda x: x, [1, 2, 3])) == map > False > > Recommendations?
Doesn't strike me as a terrible problem. Why is the latter == failing? What's the different between type(map(...)) and map? -- --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
