Piet van Oostrum <p...@cs.uu.nl> writes: >>>>>> John Machin <sjmac...@lexicon.net> (JM) wrote: > >>JM> On Apr 16, 8:14 am, Chris Rebert <c...@rebertia.com> wrote: >>>> >>>> def all_same(lst): >>>> return len(set(lst)) == 1 >>>> >>>> def all_different(lst): >>>> return len(set(lst)) == len(lst) > >>JM> @ OP: These are very reasonable interpretations of "all same" and "all >>JM> different" but of course can both return False for the same input. > > They can even both return True for the same input!
I didn't see the simple: >>> def all_same(l): ... return all(l[i]==l[i+1] for i in range(len(l)-1)) ... >>> all_same([1,2,3]) False >>> all_same([1]) True >>> all_same([1,1,1]) True >>> all_same([1,1,1,2]) False >>> all_same([]) True >>> -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
