use iterator object python code example

Example 1: python how to use iter

s = 'hello'
s_iter = iter(s) #Changes the string to an iterator
print(next(s_iter)) #Will print h
print(next(s_iter)) #Will print e
print(next(s_iter)) #Will print l
print(next(s_iter)) #Will print l
print(next(s_iter)) #will print o

Example 2: interator maning

An Iterator is an object that can be used to loop through collections,
like ArrayList and HashSet. It is called an "iterator" because "iterating" 
is the technical term for looping. To use an Iterator, you must import it 
from the java.