bearophileh...@lycos.com wrote:
> Brett Hedges:
> > My question is how do I go to a previous line in the file? xreadlines has a
> > file.next() statement that gives the next line, and I need a statement that
> > gives me the previous line.<
>
> In modern versions of Python you usually don't n
On Fri, Feb 27, 2009 at 12:20 PM, Scott David Daniels
wrote:
> (1) Please do not top post in comp.lang.python, it violates conventions.
>
> Brett Hedges (should have written):
>> bearophile wrote: ...
>>>
>>> You can also keep track of the absolute position of the lines in the
>>> file, etc, or st
(1) Please do not top post in comp.lang.python, it violates conventions.
Brett Hedges (should have written):
> bearophile wrote: ...
You can also keep track of the absolute position of the lines in the file, etc, or step
>> back looking for newlines, etc, but it's not handy
How would I ke
Brett,
I'm not sure what exactly you're trying to do, but you can keep track
of line numbers using itertools.
import itertools
for lineIndex, line in itertools.izip(itertools.count(1), open('text.txt')):
print lineIndex, line
Here is sample code for breaking on a word and returning the prev
Brett Hedges:
> How would I keep track of the absolute position of the lines?
You may have to do all things manually (tell, seek and looking for
newlines manually, iterating chars), that's why I have said it's not
handy. The other solutions are simpler.
Bye,
bearophile
--
http://mail.python.org/m
m: bearophileh...@lycos.com
> Subject: Re: Using xreadlines
> To: python-list@python.org
> Date: Thursday, February 26, 2009, 8:09 PM
> Brett Hedges:
> > My question is how do I go to a previous line in the
> file? xreadlines has a file.next() statement that gives the
> next line, an
Brett Hedges:
> My question is how do I go to a previous line in the file? xreadlines has a
> file.next() statement that gives the next line, and I need a statement that
> gives me the previous line.<
In modern versions of Python you usually don't need xreadlines,
because files are iterable.
If
On Thu, Feb 26, 2009 at 4:32 PM, Brett Hedges wrote:
>
> Hi,
>
> I am using both xreadlines and files iterators for a script that I need to
> finish. I am iterating over the entire file but stopping to use xreadlines to
> grab certain lines as strings to process them.
>
> My question is how do I
