How about this List1=[ 1,2,3,4] Rever_gen = ( x*x for x in list1, reversed = True)
Rever_gen gets generator object and iterating it now gets reverse order.. Am I correct here? Suggest me On Fri, 15 Feb 2019, 12:33 dieter <die...@handshake.de wrote: > Prahallad Achar <achar...@gmail.com> writes: > > How to implement reverse generator > > A generator generates a sequence of values. > > The notion "reverse generator" suggests that you have a sequence > of values and want to produce it in reverse order. > This is not always possible. > > Consider: > def natural(): > i = 0 > while True: yield i; i += 1 > > This generator generates all natural numbers (up to the memory limit). > However, there is no "reverse generator" for the sequence of natural > numbers. > > If you have a finate sequence of values, you can turn it into > a list, reverse this list and iterate over it. This will give > you a reverse generator for your sequence of values (though maybe > an inefficient one). > > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
