>Peter Hansen <[EMAIL PROTECTED]> writes: > >> Mike Meyer wrote: >>> Yes. I once grabbed an old program that did assignments to None. But >>> that's always been a bad idea. >> What was the use case!? > >Unpacking a tuple. Something like this: > > (foo, bar, None) = gen_tuple(stuff)
I can see several reasonable ways to avoid that. 1) If you wrote gen_tuple(), and know you don't need the third element of the tuple, just change gen_tuple() to only return the first two! Or, invent a little data class for it to return. If you can't do that (for whatever reason), then... 2) foo, bar, baz = gen_tuple(stuff), where foo, bar, and baz are all meaningful names. 3) foo, bar, dummy = gen_tuple(stuff), to emphasize that the last value is ignored. 4) foo, bar = gen_tuple(stuff)[0:1]. In some ways, this is the cleanest because it doesn't pollute the namespace with an un-needed variable, but I think it's the least readable. -- http://mail.python.org/mailman/listinfo/python-list
