[EMAIL PROTECTED] wrote: > Leif K-Brooks wrote: > >>[EMAIL PROTECTED] wrote: >> >>>thanks. that is what I am doing now, in a more generic form : >>> >>>takewhile(p, (x for x in xrange(100000000))) >> >>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)))
Wrapping a function in a generator expression doesn't magically make it lazily evaluated. The whole list has to be generated and returned; using a generator expression instead of a list comprehension just means that it doesn't need to be copied in memory. -- http://mail.python.org/mailman/listinfo/python-list
