Second python program: classes, sorting

[WP]

Hello, here are some new things I've problems with. I've made a program 
that opens and reads a text file. Each line in the file contains a name 
and a score. I'm assuming the file has the correct format. Each 
name-score pair is used to instantiate a class Score I've written. This 
works fine, but here's my problem: After reading the file I have list of 
Score objects. Now I want to sort them in descending order. But no 
matter how I write my __cmp__ the order remains unchanged. I've 
determined that __cmp__ is called but it's only called twice for three 
list elements, isn't that odd?

Complete program:
class Score:
     def __init__(self, name_, score_):
         self.name = name_
         self.score = score_

     def __str__(self):
         return "Name = %s, score = %d" % (self.name, self.score)

     def __cmp__(self, other):
         print "in __cmp__"
         return self.score >= other.score

     name  = ""
     score = 0
# End class Score

filename = "../foo.txt";

try:
     infile = open(filename, "r")
except IOError, (errno, strerror):
     print "IOError caught when attempting to open file %s. errno = %d, 
strerror = %s" % (filename, errno, strerror)
     exit(1)

lines = infile.readlines()

infile.close()

lines = [l.strip() for l in lines] # Strip away trailing newlines.

scores = []

for a_line in lines:
     splitstuff = a_line.split()

     scores.append(Score(splitstuff[0], int(splitstuff[1])))

scores.sort()

for a_score in scores:
     print a_score

Test file contents:
Michael 11
Hanna 1337
Lena 99

Output:
in __cmp__
in __cmp__
Name = Michael, score = 11
Name = Hanna, score = 1337
Name = Lena, score = 99

What am I doing wrong here?

- Eric (WP)