iterating through files

Mike Driscoll kyosohma at gmail.com
Thu Feb 19 23:28:25 CET 2009


On Feb 19, 4:22 pm, Mike Driscoll <kyoso... at gmail.com> wrote:
> On Feb 19, 3:56 pm, oamram <oam... at gmail.com> wrote:
>
> > Hi Pythonist,
> > new to python. i have a directory with about 50 text file and i need to
> > iterate through them and get
> > line 7 to 11 from each file and write those lines into another file(one file
> > that will contain all lines).
>
> > Cheers, Omer.
> > --
> > View this message in context:http://www.nabble.com/iterating-through-files-tp22048070p22048070.html
> > Sent from the Python - python-list mailing list archive at Nabble.com.
>
> I would recommend using the glob module to grab a list of the files
> you want or you can just create your own list. Then use a loop to grab
> the lines you want. Something like this:
>
> f = open(textFile)
> newFile = open(newFileName, "a")
> x = 1
> for line in f.readlines():
>     if x >=7 and x <=11:
>          newFile.write(line + "\n")
>
> You could even put the above inside a loop that loops over the list of
> files. Anyway, that's one approach. I'm sure there are many others.
>
> Mike

Oops...I forgot to iterate the counter. The code should look like
this:

<code>

f = open(textFile)
newFile = open(newFileName, "a")
x = 1
for line in f.readlines():
    if x >=7 and x <=11:
         newFile.write(line + "\n")
    x +=1

</code>

Sorry about that.

Mike



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