def xrange(n):

     start = 0

     while True:

         if start>n:

             return

         yield start

         start+=1

 obj = xrange(5)

 n1 = obj.__next__()

 n2 = obj.__next__()

 n3 = obj.__next__()

 n4 = obj.__next__()

 n5 = obj.__next__()

 n6 = obj.__next__()

 n7 = obj.__next__()

 print(n1,n2,n3,n4,n5,n6,n7)