hi I have two lists of names.I need to find the difference between these two lists.I tried to do it using sets.But I am wondering if there is a better way to do it.Please tell me if there is a more elegant way. thanks, jim
my code snippet follows.. oldlst=['jon','arya','ned','bran'] newlst=['jaime','jon','cersei'] newlyadded=set(newlst)-set(oldlst) removed=set(oldlst)-set(newlst) unchanged=set(oldlst)& set(newlst) print '%d were newly added= %s'%(len(newlyadded),list(newlyadded)) print '%d were removed=%s'%(len(removed),list(removed)) print '%d were unchanged=%s'%(len(unchanged),list(unchanged)) this produces the output -------------- 2 were newly added= ['jaime', 'cersei'] 3 were removed=['ned', 'arya', 'bran'] 1 were unchanged=['jon'] -- http://mail.python.org/mailman/listinfo/python-list
