BASH: how to perform arithmetic on numbers in a pipe

Question

I am getting a stream of numbers in a pipe, and would like to perform some operations before passing them on to the next section, but I\'m a little lost about how I would go

Answer 1

If you prefer Python:

#!/bin/python
num = input()
while num:
    print(int(num) + 1) # Whatever manipulation you want
    try:
        num = input()
    except EOFError:
        break