On 07/05/2016 03:05 PM, Seymore4Head wrote:
import os

f_in = open('win.txt', 'r')
f_out = open('win_new.txt', 'w')

for line in f_in.read().splitlines():
     f_out.write(line + " *\n")

f_in.close()
f_out.close()

os.rename('win.txt', 'win_old.txt')
os.rename('win_new.txt', 'win.txt')


I just tried to reuse this program that was posted several months ago.
I am using a text flie that is about 200 lines long and have named it
win.txt.  The file it creates when I run the program is win_new.txt
but it's empty.



Not your problem, but you can simplify your read/write loop to:

for line in f_in:
    f_out.write(line[:-1] + ' *\n')

The 'line[:-1]' expression gives you the line up to but not including the 
trailing newline.
Alternately, use:  f_out.write(line.rstrip() + ' *\n')

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