The alternate generator takes any number of iterables as parameters: it produces the first value from the first parameter, then the first value from the second parameter, ..., then the first value from the last parameter; then the second value from the first parameter, then the second value from the second parameter, ..., then the second value from the last parameter; etc. If any iterable produces no more values, alternate produces no more values. For example for i in alternate('abcde','fg','hijk'): print(i,end='') prints afhbgic. You may not use a call to zip function. Hint: I called iter and next directly, using a while and for loop. You can create a list whose length is the number of arguments: 3 for the call to alternate above. Hint: I called iter and next directly, using a list that I iterated over with a for loop.