s9.py

#set
a={1,2,3,4,5}
#Converting set(iterable) into iterator object using iter() function.
b=iter(a)
print (b)#Output:<set_iterator object at 0x029794E8>
print (type(b))#Output:<class 'set_iterator'>


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