On 17/04/2008, Tarek Ziadé email@example.com wrote:
shutil.copytree is very convenient to make recursive copies, but os.walk has to be used everytime some filtering has to be done on the files copied., if you want to avoid copying some files.
The code pattern with os.walk is pretty talkative :
--------------------- copying a source folder to a target folder, but the pyc/pyo files os.mkdir(target) for root, dirs, filenames in os.walk(source): root_target = root.replace(source, target) for dir_ in dirs: target_dir = join(root_target, dir_) if os.path.exists(target_dir): continue os.mkdir(target_dir) for filename in filenames: filename_source = join(root, filename) filename_target = join(root_target, filename) if (os.path.exists(filename_target) or os.path.splitext(filename) in ('.pyc', '.pyo')): continue shutil.copyfile(filename_source, filename_target)
If we could provide a callable argument to shutil.copytree, this would allow simplifying a lot the code:
--------------------- copying a source to a target, but the pyc/pyo file def filtering(source, target): return os.path.splitext(filename) not in ('.pyc', '.pyo')
shutil.copytree(source, target, filter_=filtering)
This is a very current pattern in my code, and I think this could be an interesting enhancement to shutil. So if people think it is a good idea, I can work on a patch and submit it to the tracker.
I also think this is a good idea; I recently was forced to copy-paste and modify shutil.copytree into a project because of this limitation.
Tarek Ziadé | Association AfPy | www.afpy.org Blog FR | http://programmation-python.org Blog EN | http://tarekziade.wordpress.com/ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/gjcarneiro%40gmail.com