s3.py

#Tuple
a=(1,2,3,4,5)
#Converting tuple(iterable) into iterator object using iter() function.
b=iter(a)
print (b)#Output:<tuple_iterator object at 0x015DE610>
print (type(b))#Output:<class 'tuple_iterator'>


#Applying next() over the iterator.
#Returns one element at a time.
print (next(b))#Output:1
print (next(b))#Output:2