2009/3/20 Kent Johnson <ken...@tds.net> > 2009/3/20 Emad Nawfal (عماد نوفل) <emadnaw...@gmail.com>: > > > if I want to do this with more than two dictionaries, the obvious > solution > > for me is to use something like the reduce functions with a list of > > dictionary names like: > > dictList = [dict1, dict2, dict3] > > newDict = reduce(addDicts, dictList) > > > > Is this a satisfactory solution? > > This will do some extra copying, as addDicts() always copies the first > argument. You would do better with something like > def addToDict(a, b): > for k,v in b.iteritems(): > a[k] += v > return a > > newDict = reduce(addDictTo, dictList[1:], defaultdict(int, dictList[0])) > > or rewrite addDicts() to take a variable number of arguments and loop > over the args. > > Kent > Thanks Kent and All. I appreciate your helpfulness
-- لا أعرف مظلوما تواطأ الناس علي هضمه ولا زهدوا في إنصافه كالحقيقة.....محمد الغزالي "No victim has ever been more repressed and alienated than the truth" Emad Soliman Nawfal Indiana University, Bloomington --------------------------------------------------------
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