how can i increase number in input statement in python 3f

1#     The most easist way imade it my self : */
2  
3#   imports: 
4import itertools
5
6# the loop you can also copy this 
7while True:
8    for i in itertools.count(start=1):
9      
10        add = ">>>"
11
12        main = i * 1
13
14        input(str(main) + " " + add)
15        
16        
17# Thank You
18