On Mon, 03 Nov 2008 06:42:28 -0500, Kent Johnson wrote: > On Mon, Nov 3, 2008 at 6:15 AM, Lie Ryan <[EMAIL PROTECTED]> wrote: >> On Sun, 02 Nov 2008 23:20:47 -0800, Dinesh B Vadhia wrote: >> >>> I want to pickle a bunch of lists and write each list separately to a >>> fileand then read them back. > >> To solve your problem, you have several alternative possibilities: > > 6. Make multiple calls to dump() and load() using an explicit pickler, > pickling directly to the file (not tested): > > filename = 'lists.txt' > fw = open(filename, 'wb') # Note open in binary mode for protocol 2 > pickler = pickle.Pickler(fw, 2) > for l in m: > pickler.dump(l) > fw.close() > > fr = open(filename, 'rb') > pickler = pickle.Unpickler(fr) > for i in range(3): > line = pickler.load(fr) > print line > fr.close()
Ah, I see, that's why the pickle module contains Pickler object. btw, I have to add, none of the five code I wrote is tested at all, and definitely #4 wouldn't work as it assumed there is a function that could automagically escape the string. And, using Pickler object is probably the best solution here. _______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
