On 28/11/15 11:22, Br. Sayan wrote:
> I am doing the following :
>
> with open('Manwal.txt') as infile, open('Manwal_req.txt','w') as outfile:
> for line in infile:
> if line.startswith(('R')):
> outfile.write(line)
>
> It is executing without error but returns a blank file. Where is the
> problem?
Are you sure your line actually has multiple lines? The sample you
posted last time showed up on my system as one very long line. I think
it had ^M line breaks in it but my OS didn't recognise them. So if the
file was generated on a different computer/OS to the one you are using
you may need to split the file before processing.
Just a thought.
Try printing the first 5 characters of each line line (line[:5]) and see
if you get what you expect.
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
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