On 05/06/17 09:38, Jussi Piitulainen wrote: > Peter Otten writes: > >> Thomas Jollans wrote: >>> Also: >>> >>>>>> s[0] is s[0][0][0][0][0][0][0] >>> True >>>>>> >> >> However, this is an implementation detail: >> >>>>> def is_cached(c): >> ... return c[0] is c[0][0] >> ... > > I think this works the same, and looks more dramatic to me: > > ... return c[0] is c[0]
I love this. What I thought was going on was that single-character strings return self on [0], as they do on full-length slices. >>> c = 'δ' >>> c[0] is c False >>> c[:] is c True >>> c[0:1] is c True >>> I wonder why they don't do this... > >>>>> is_cached(chr(255)) >> True >>>>> is_cached(chr(256)) >> False > > Also same thing, as far as I can see: > >>>> s = "\u00ff\u0100" ; (s[0] is s[0], s[1] is s[1]) > (True, False) > -- https://mail.python.org/mailman/listinfo/python-list
