Quite often I find myself wanting to write an infinite for-loop, or rather a loop with a counter, that terminates on some inner condition. Recently I even wanted to do this together with the generator comprehension syntax, I don't remember exactly what I wanted to do, but it was something like: zip( some_list_of_unknown_length, ('a' for x in infinit_generator) ) I admit that my example is silly, but it still serves as an example of what I wanted to do. Then I read that Ellipsis will become generally accepted in py3k [1] and thought why not let range accept ... as end-parameter to mean "until forever". More silly examples to demonstrate how it would work:
for i in range(...): ... print i ... if i == 4: break 0 1 2 3 4 for i in range(10,...,10): ... print i ... if i == 40: break 10 20 30 40
Any thoughts on this? /Tobias [1] http://mail.python.org/pipermail/python-3000/2006-April/000996.html