Maggie wrote:
On Sep 8, 4:17 pm, MRAB <pyt...@mrabarnett.plus.com> wrote:
Maggie wrote:
On Sep 8, 3:29 pm, Maggie <la.f...@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 --
Read the traceback.
#!/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
Try to avoid using the names of builtin functions and classes, in this
case 'sum'.
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
You can't add a number to a string; a number is a number and a string is
a string! :-)
tmp_string = str(count) + ' ' + item + ' '+ str(sum)
print >> FILE, tmp_string,
else:
print 'The loop is finito'
I saw my mistake...now it is telling me the following --
Traceback (most recent call last):
File "formisano_count.py", line 22, in <module>
running_sum = running_sum + (int(item) * int(item))
ValueError: invalid literal for int() with base 10: ''
..
not sure what exactly i am doing wrong!
You're trying to convert an empty string into an integer. Does the file
contain a blank line?
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