File IO Issues, help :(

[Kevin K]

On Apr 29, 12:55 am, Peter Otten <__pete... at web.de> wrote:
> Kevin K wrote:
> > On Apr 29, 12:38 am, "Eric Wertman" <ewert... at gmail.com> wrote:
> >> chuck in a jsfile.close().  The buffer isn't flushing with what you
> >> are doing now.  jsfile.flush() might work... not sure.  Closing and
> >> re-opening the file for sure will help though.
>
> > Yeah sorry I forgot to include the close() in the quote but its there.
> > In fact I moved it up a bit and still no luck heres the new code:
>
> > jsfile = open("../timeline.js", "r+")
> > jscontent = jsfile.readlines()
> > jsfile.truncate()
>
> > for line in jscontent:
> > if re.search('var d =', line):
> > line = "var d = \""+mint['1'].ascdate()+"\"\n"
> > print line
> > jsfile.write(line)
> > jsfile.close()
>
> > I tried this can got the same result...??
>
> """
> truncate(...)
>     truncate([size]) -> None.  Truncate the file to at most size bytes.
>
>     Size defaults to the current file position, as returned by tell().
> """
>
> After the readlines() call the current file position is at the end of the
> file. Try jsfile.truncate(0).
>
> Also note that readlines() reads the whole file into memory. For large files
> it would therefore be better to write to a new file and rename it
> afterwards.
>
> Peter

Thanks Peter that seemed to be most of the problem, however I now have
a bunch of null characters in the file. Could it be an unwanted line
in the list that im writing?

Thanks,
Kevin