while

Runs as long as condition is true.

i = 1

while i < 6:
  print(i)
  i += 1

next

Function used to retrieve next item from the iterator.

mylist = iter(["apple", "banana", "cherry"])

x = next(mylist) # x = apple
x = next(mylist) # x = banana
x = next(mylist) # x = cherry