Get next element in list python

Sometimes you will need to keep some items in the list and get the next item. It can be done easily using a variable as the current position tracker. Check the code below:

current_position = 0 my_li = [1, 2, 3, 4, 5] for i in range[0, 8]: value = my_li[current_position % [len[my_li]]] current_position += 1 print value for i in range[0, 5]: value = my_li[current_position % [len[my_li]]] current_position += 1 print value
You can also do this using an iterator. Try this python code:

def get_next_element[my_itr]: try: return my_itr.next[] except StopIteration: return None my_li = [1, 2, 3, 4, 5] #convert the list to an iterator my_itr = iter[my_li] for i in range[0, 10]: print get_next_element[my_itr] If you run the code you will see the following output:

1
2
3
4
5
None
None
None
None
None

This is because the iterator is not circular. It can be fixed like this:
def get_next_element[my_itr]: try: return my_itr.next[] except StopIteration: return None my_li = [1, 2, 3, 4, 5] #convert the list to an iterator my_itr = iter[my_li] for i in range[0, 8]: value = get_next_element[my_itr] if value is None: my_itr = iter[my_li] value = get_next_element[my_itr] print value
But I was wondering whether there is any straight-forward method to make the iterator circular.