On Aug 6, 8:15 am, "Rhodri James" <rho...@wildebst.demon.co.uk> wrote: > On Thu, 05 Aug 2010 17:07:53 +0100, wheres pythonmonks > > <wherespythonmo...@gmail.com> wrote: > > Well, I am not convinced of the equivalence of not None and true: [snip] > >>> "spam, eggs, chips and spam" is "spam, eggs, chips and spam" > True > >>> a = "spam, eggs, chips and spam" > >>> b = "spam, eggs, chips and spam" > >>> a is b > False
but: >>> a = "hello" >>> b = "hello" >>> a is b True Ooh, that looks dangerous. Are they the same object? >>> a += "o" >>> a 'helloo' >>> b 'hello' Phew. (Python does not make two copies of small strings until it needs to). Matt. -- http://mail.python.org/mailman/listinfo/python-list
