>>> range(10, 0, -1)
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
>>> range(10)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> range(0, 10)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> range(5, 10)
[5, 6, 7, 8, 9]
>>> range(5, 10, 2)
[5, 7, 9]
>>> range(10, 5, -2)
[10, 8, 6]

 1 def test_range(n):
 2     for i in range(n):
 3         print i
 4 
 5     print ‘****************************************‘
 6     for j in range(0, n):
 7         print j
 8         
 9     print ‘****************************************‘
10     for k in range(5, n):
11         print k
12 
13     print ‘****************************************‘
14     for m in range(0, n , 2):
15         print m
16         
17     print ‘****************************************‘
18     for n in range(n, 0, -1):
19         print n
20         

 1 0
 2 1
 3 2
 4 3
 5 4
 6 5
 7 6
 8 7
 9 8
10 9
11 ****************************************
12 0
13 1
14 2
15 3
16 4
17 5
18 6
19 7
20 8
21 9
22 ****************************************
23 5
24 6
25 7
26 8
27 9
28 ****************************************
29 0
30 2
31 4
32 6
33 8
34 ****************************************
35 10
36 9
37 8
38 7
39 6
40 5
41 4
42 3
43 2
44 1