Bart Van Loon wrote: > Hi all, > > I would like to find out of a good way to append an element to a list > without chaing that list in place, like the builtin list.append() does. > > currently, I am using the following (for a list of integers, but it > could be anything, really) > > #-------------------------------------------------- > def addnumber(alist, num): > """ work around the inplace-ness of .append """ > mylist = alist[:] > mylist.append(num) > return mylist > #--------------------------------------------------
Use + : In [1]: a=[1,2] In [2]: b=a+[3] In [3]: a Out[3]: [1, 2] In [4]: b Out[4]: [1, 2, 3] Kent -- http://mail.python.org/mailman/listinfo/python-list
