On 31 Aug 2009, at 14:08, Laurent PETIT wrote: > [Python] > > open(filename, 'r').read() # who cares about closing files opened in > read-mode? > > "who cares about closing files opened in read-mode" ? > > I would say anybody concerned about blowing up the underlying OS if > not releasing files handles (especially if you open files in a tight > loop), or do I miss something ?
In this particular case, there is no reason to worry: open() returns a file object that is fed to the method read(), but after that method returns, there is no more reference to the object, so it is garbage collected. Upon destruction of the file object, Python closes the file. All that is documented behaviour in Python, so it is safe to rely on it. It is another question if relying on a list of reasonable but not evident behaviours is good style. Personally, I don't use such constructs in library code, but I do in scripts for personal use. In Clojure, I would be much more careful because I know the Java libraries less well than the Python libraries. Which illustrates that "good style" also depends on someone's experience. Konrad. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
