code-challenge-answer.py

#!/usr/bin/env python2

import sys

class Line(object):
    
    average = 0
    minimum = 0
    maximum = 0
    host    = None
    total   = 0
    count   = 0
    
    def __init__(self, data):
        if type(data) not in (str, unicode):
            raise ValueError, 'Invalid data based to Line.__init__()'
        self.host = data.split(',')[0]
        for bit in data.split('|')[1].split(','):
            if not bit.isalpha():
                if float(bit) < self.minimum:
                    self.minimum = float(bit)
                elif float(bit) > self.maximum:
                    self.maximum = float(bit)
                self.total += float(bit)
                self.count += 1
        self.average = (self.total / self.count)
        
    def __str__(self):
        return '%s: Average: %f Max: %f Min %f' % (self.host,
                                                   self.average,
                                                   self.maximum,
                                                   self.minimum)

    def __repr__(self):
        return self.__str__()


if __name__ == '__main__':
    lines = []
    buff = sys.stdin.readline()
    while buff:
        lines.append(Lines(buff.strip()))
        buff = sys.stdin.readline()
    lines.sort(key = lambda x: x.average)
    lines.reverse()
    for i in lines:
        print lines