At Thursday 16/11/2006 22:33, PS wrote:
Friends,
I am new to python and did search on the web on how to achieve this:
( I am trying to append the line numbers to all the lines of a file for now)
But you forget to say what went wrong... Next time, post the error
message including the full traceback.
Using my crystal ball I can see a few problems here:
import os, sys
fileName = os.path.join("C:", "temp", "x1.txt")
fileobject = open(fileName, 'r')
outputDir = "C://temp//"
linenumber = 0
fileName1 = outputDir + " x2.txt"
I see that you already know how to build properly a file name using
os.path.join - well, some lazyness is ok...
fileobject1 = open(fileName1, 'w')
while (1):
L = fileobject.readline()
if L=="":
print "**Done"
break
Usually that's written as:
for L in fileobject:
... do something ...
else:
print "** Done"
for is used to iterate over some sequence (or iterator), and a file
acts as its own iterator, yielding one line at a time.
The else clause -optional- is executed when nothing remains to iterate.
linenumber += 1
fileobject1.write (ln)
fileobject1.write(":: "+ L)
I think here is your problem. You want the line number (printed as
text), followed by two :, a space, and the original line contents. I'd use:
fileobject1.write("%d:: %s" % (linenumber, L))
fileobject1.close()
=============================================================
Enough for a good start. Happy pythoning!
--
Gabriel Genellina
Softlab SRL
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