Please help for Python programming

[yy0127 at gmail.com]

I am sorry that i forgot to see the working example. Base on your
example, i can show the value without missing but got the other
problem. I would like to culmulate the value by users. I was rewrite
your example but cannot not work.

##
import sys
import pprint

try:
    f = open('data.txt', 'r')
except IOError, e:
    print >> sys.stderr, "Cannot open file data.txt for reading : %s"
%e
    sys.exit(1)

users = {}
cumdata2 = 0
cumdata3 = 0
for line in f:

    try:
        user, data1, data2 = line.strip().split('\t')
    except ValueError:
        print >> sys.stderr, "wrong file format"
        f.close()
        sys.exit(1)
    try:
        users[user].append("%s : %s" % (data1, data2))
        cumdata2 = int(data2) + cumdata2
    except KeyError:
        users[user] = ["%s : %s" % (data1, data2)]
        cumdata3 = int(data2) + cumdata3

f.close()
print "collected data:"
pprint.pprint(users)
print cumdata2
print cumdata3
##

The above example can run but the total num are wrong. Would you mind
to figure out where is my problem?

Thanks for your prompt help!!!