s7.py

#dictionary
a={'a':1,'b':2,'c':3}
#Converting dictionary(iterable) into iterator object using iter() function.
b=iter(a.items())
print (b)#Output:<dict_itemiterator object at 0x01398F50>
print (type(b))#Output:<class 'dict_itemiterator'>


#Applying next() over the iterator.
#Returns one element(key,value) a time.
#Loops over the (key,value) pairs in the dictionary
print (next(b))#Output:('a', 1)
print (next(b))#Output:('b', 2)