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Date: Fri, 28 Sep 2012 16:33:30 -0500 (CDT)
From: Wayne Werner <wayne@waynewerner.com>
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To: Franck Ditter <franck@ditter.org>
Subject: Re: print or write on a text file ?
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On Fri, 28 Sep 2012, Franck Ditter wrote:

> Hi !
> Here is Python 3.3
> Is it better in any way to use print(x,x,x,file='out')
> or out.write(x) ? Any reason to prefer any of them ?
> There should be a printlines, like readlines ?
> Thanks,

The print function automatically appends newlines to the end of what it 
prints.

So if you had

text = 'Hello!'

and you did:

print(text, file=outfile)

then outfile would contain 'Hello!\n'

In contrast, outfile.write(text) would only write 'Hello!'. No newline.

There are lots of other handy things you can do with the print function:

values = [1,2,3,4]
print(*values, sep='\n', file=outfile)

I'll leave it to you to experiment.
HTH,
Wayne