On Tue, Jul 5, 2016 at 7:03 PM, MRAB <pyt...@mrabarnett.plus.com> wrote:
> On 2016-07-05 23:05, 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.
>>
> Although it creates a file called "win_new.txt", it then renames it to
> "win.txt", so "win_new.txt" shouldn't exist.
>
> Of course, if there's already a file called "win_old.txt", then the first
> rename will raise an exception, and you'll have "win_new.txt" and the
> original "win.txt".
>
> --
> https://mail.python.org/mailman/listinfo/python-list
Why don't you comment out the renames, and see what happens?
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Joel Goldstick
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