Fredrik Lundh wrote:
> that's probably because finalizers *are* called when Python exits.
D'oh! Old semantics? I'm sure I remember this used to not work at some
point, and not just in Jython.
My apologies to anyone who I led astray. Still ... better to be too
careful ;) I've been trying to find
Delaney, Timothy C (Timothy) wrote:
> Remember, finalisers are not called when Python exits. So if you don't
> explicitly close the file you are *writing* to, it may not be flushed
> before being closed (by the OS because the process no longer exists).
Wrong.
% python
Python 2.3 (#1, Sep 13 2003,
Peter Hansen wrote:
> > Remember, finalisers are not called when Python exits. So if you don't
> > explicitly close the file you are *writing* to, it may not be flushed
> > before being closed (by the OS because the process no longer exists).
>
> Ouch... I'd forgotten/never heard that I guess. If
My understanding is that Python code should keep as many possible
implementations in mind. For example, I have been told that it would be
unwise to do something like this in Jython because the Java GC will not
reclaim the file resources:
for afile in more_than_just_a_few_files:
for aline in o
Mike mentions an important point, and I've been bitten by the
phenomenon Mike mentions---but only when *writing* to files. They
should always be closed explicitly, as in
f = file(filename, 'w')
f.write(somestring)
f.close()
On the other hand, I've never encountered a problem with the "for line
Delaney, Timothy C (Timothy) wrote:
> Peter Hansen wrote:
>>In my opinion, if the code fits on one screen and just reads stuff
>>from one file and, maybe, writes to another, you can safely and with
> ^^
>>clean conscience ignore Mike's advice (but remember it for lat
Peter Hansen wrote:
> In my opinion, if the code fits on one screen and just reads stuff
> from one file and, maybe, writes to another, you can safely and with
^^
> clean conscience ignore Mike's advice (but remember it for later!).
Remember, finalisers are not cal
Mike Meyer wrote:
> I'd like to note that failing to close the file explicitly is a bad
> habit. You really should invoke the close method, rather than relying
> on the garbage collector to close them for you. This means you do need
> a variable to hold the file object. 99% of the time nothing bad
"Michael Hartl" <[EMAIL PROTECTED]> writes:
> I'd also like to note that both the inputfiles variable and the
> readlines() method are superfluous; to iterate through the file line by
> line, use either
>
> for line in open(inputfilename):
> # do something with line
>
> or (my personal prefere
Alex Nordhus wrote:
...
> for ln in inputfile.readlines():
> words = string.split(ln)
> if len(words) >= 2:
> # print (words[1])
Try:
print >>outputfile, words[1]
--Scott David Daniels
[EMAIL PROTECTED]
--
http://mail.python.org/mailman/listinfo/python-lis
I'd also like to note that both the inputfiles variable and the
readlines() method are superfluous; to iterate through the file line by
line, use either
for line in open(inputfilename):
# do something with line
or (my personal preference, since I like to think of the file as a
thing rather th
Alex Nordhus wrote:
> Im trying to grab a colum of data from a text file and write it to a
new
> file.
> I am having trouble getting It to write the data to newlines. Python
is
> making it one
> Long string without any spaces when it writes the file. The first
> character is capitalized in colum 2.
Try
outputfile.write(words[1]+"\n")
On Tuesday 10 May 2005 10:57 am, Alex Nordhus wrote:
> outputfile.write(words[1])
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095
http://www.jamesstroud.com/
--
http://mail.python.org/mailman/listinfo/python-l
That worked! Thank you so much!
--
http://mail.python.org/mailman/listinfo/python-list
write() doesn't automatically add a newline like print does.
You can either do:
outputfile.write(words[1] + '\n')
or
print >> outputfile, words[1]
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Im trying to grab a colum of data from a text file and write it to a new
file.
I am having trouble getting It to write the data to newlines. Python is
making it one
Long string without any spaces when it writes the file. The first
character is capitalized in colum 2.
I am trying to grab the 2nd co
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