On Thursday 26 May 2011 14:46:45 Uncle Ben wrote: > In playing with lists of lists, I found the following: > > (In 3.1, but the same happens also in 2.7) > > list = [1,2,3] > list.append ( [4,5,6] ) > x = list > x -> > [1,2,3,[4,5,6]] > as expected. > > But the shortcut fails: > > list=[1,2,3] > x = list.append( [4,5,6] ) > x -> > nothing > > Can someone explain this to me? > > Uncle Ben
And why do you insist on calling and instance of list, "list"? Even a human reader will confuse which is which. What you are showing is an example how confusing things become when a keyword (list) is over-written (with list instance). Why don't you just say lst = [1, 2, 3] rather than list =... It may be permissible, but it is not a good idea! Old (practical) Al. -- Algis http://akabaila.pcug.org.au/StructuralAnalysis.pdf
-- http://mail.python.org/mailman/listinfo/python-list
