On Wed, 28 Dec 2005 14:40:45 -0800, Carl J. Van Arsdall wrote: > KraftDiner wrote: >> I understand that everything in python is a refrence.... > >> I have a small problem.. >> >> I have a list and want to make a copy of it and add an element to the >> end of the new list, >> but keep the original intact.... >> >> so: >> tmp = myList >> > > tmp = myList is a shallow copy
tmp = myList *is not a copy at all*. The *names* "tmp" and "myList" both are bound to the *same* object. They are two names for the same object. tmp = myList[:] is a shallow copy of myList. tmp = copy.deepcopy(myList) makes a copy of myList, *and* copies of everything inside myList. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
