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#!/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()