Help with cumulative sum

Tue Sep 8 16:03:41 EDT 2009

On Sep 8, 3:49 pm, Maggie <la.f... at gmail.com> wrote:
> On Sep 8, 3:29 pm, Maggie <la.f... at gmail.com> wrote:
>>>> > Building on the code that I posted in one of the previous posts.. I
> > need to find a cumulative sum of the file of the times in the test
> > file:
>> > here is the code i have:
>> > #!/usr/bin/python
>> > import os.path
>> > #name of output file
> > filename = "OUTPUT.txt"
>> > #open the file
> > test = open ("test.txt", "rU")
>> > #read in all the data into a list
> > readData = test.readlines()
>> > count = 0
>> > FILE = open(filename, "w")
>> > for item in readData:
>> >    count = count + 1
> >    tmp_string = str(count) + '  ' + item
> >    print >> FILE, tmp_string,
>> > else:
> >    print 'The loop is finito'
>> > -----
>> > my test file is this
>> > 23
> > 241
> > 34234
> > 83
> > 123
>> > and I need to find a CUMULATIVE sum (or the running sum)...what would
> > be the best way to go about that given the code i already have?
>> > thank you all!
>> ---
>> was trying to plug in the sum for the loop..but for some reason it
> doesnt want to work --
>> #!/usr/bin/python
>> import os.path
>> #name of output file
> filename = "OUTPUT.txt"
>> #open the file
> formisano = open ("test.txt", "rU")
>> #read in all the data into a list
> readData = formisano.readlines()
>> sum = 0
> count = 0
>> FILE = open(filename, "w")
>> for item in readData:
>>    count = count + 1
>    sum = sum + (int(item) * int(item))
>    tmp_string = str(count) + '  ' + item + '    '+ sum
>    print >> FILE, tmp_string,
>> else:
>    print 'The loop is finito'

sorry...typo in code:
tmp_string = str(count) + '	' + str(sum) + ' ' + item
any suggestions are welcome