#!/usr/bin/python3


import math


class pipe(object):
    def __init__(self, start_value):
        self.value = start_value

    def __or__(self, function):
        self.value = function(self.value)
        return self


def main():
    average = lambda sequence: math.fsum(sequence) / len(sequence)
    pipe(range(1, 10)) | average | 'The average is {0}'.format | print


if __name__ == '__main__':
    main()