Paul Rubin wrote: > "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes: > > > How does a useless generator expression make it more generic? > > > > xrange is only picked as an example. I may be newbie on python but not > > that dumb if all I want is a list of integer(sorted) that meets certain > > criteria. > > > > takewhile(p, (x for x in > > some_function_that_could_potentially_generate_a_long_list_of_elements_but_first_element_that_meets_the_condition_can_come_fast(*args,**kwargs))) > > The generator expression is useless in that example too. some_function... > has to return an iterator, not a list, if you don't want it to use a > pile of memory. And if it returns an iterator, the generator > expression is redundant. You can pass the iterator directly to > takewhile. oops, my original code is much more complex than that. it is not the pythonic way of doing things but that is what I like. Try again:
takewhile(p, ((exp1(x), exp2(y)) for (x, y) in f())) -- http://mail.python.org/mailman/listinfo/python-list
