The open on the source file is unnecessary, since os.rename only needs the source and destination paths to get the job done. Moreover, os.rename always returns None, so it doesn’t make sense to call open on its return value. import os import sys folder=”E:/…/1936342-G/test” for filename in os.listdir(folder): infilename = os.path.join(folder,filename) if not os.path.isfile(infilename): continue … Read more
I’ve posted this on the duplicate question which Willy linked to, but since questions with a bounty cannot be closed as a duplicate, might as well copy it here too: import os import zipfile import StringIO from django.http import HttpResponse def getfiles(request): # Files (local path) to put in the .zip # FIXME: Change this … Read more
I suggest storing the values in a dictionary instead of in separate local variables: myvars = {} with open(“namelist.txt”) as myfile: for line in myfile: name, var = line.partition(“=”)[::2] myvars[name.strip()] = float(var) Now access them as myvars[“var1”]. If the names are all valid python variable names, you can put this below: names = type(“Names”, [object], … Read more
Here’s a sample how to use lsof for unix based systems: public static boolean isFileClosed(File file) { try { Process plsof = new ProcessBuilder(new String[]{“lsof”, “|”, “grep”, file.getAbsolutePath()}).start(); BufferedReader reader = new BufferedReader(new InputStreamReader(plsof.getInputStream())); String line; while((line=reader.readLine())!=null) { if(line.contains(file.getAbsolutePath())) { reader.close(); plsof.destroy(); return false; } } } catch(Exception ex) { // TODO: handle exception … … Read more
AFAIK no. And the reason is that for such an atomic operation to be possible, there has to be OS support in the form of a transactional file system. And none of the mainstream operating system offer a transactional file system. EDIT – I’m wrong for POSIX-compliant systems at least. The POSIX rename syscall performs … Read more
Yes, it’s possible with svn 1.6. It’s documented in the nightly build version of the svn book. But even though file externals are working, you should only do it with text files (for now) because binary files won’t work correctly as file externals.
The most important question here is what is the bottleneck in your case. If the bottleneck is your disk IO, then there isn’t much you can do at the software part. Parallelizing the computation will only make things worse, because reading the file from different parts simultaneously will degrade disk performance. If the bottleneck is … Read more