On Mon, 5 Feb 2001, M.-A. Lemburg wrote: > Two things: > > 1. the proposed syntax key:value does away with the > easy to parse Python block statement syntax Oh, come on. Slices and dictionary literals use colons too, and there's nothing wrong with that. Blocks are introduced by a colon at the *end* of a line. > 2. why can't we use the old 'for x,y,z in something:' syntax > and instead add iterators to the objects in question ? > > for key, value in object.iterator(): > ... Because there's no good answer for "what does iterator() return?" in this design. (Trust me; i did think this through carefully.) Try it. How would you implement the iterator() method? The PEP *is* suggesting that we add iterators to the objects -- just not that we explicitly call them. In the 'for' loop you've written, iterator() returns a sequence, not an iterator. -- ?!ng
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