Peter Otten wrote: > Steve Holden wrote: > >> What I will repeat, however, is that while there is a *slight* >> difference is semantics between >> >> s = "some string" >> s1 = s >> >> and >> >> s = "some string" >> s1 = copy.copy(s) >> >> that difference is only to ensure that s and s1 point to different >> copies of the same string in the latter case, whereas in the former case >> s and s1 point to the same string. > > No, both "point" to the same string: > >>>> import copy >>>> s = "some string" >>>> s1 = s >>>> s1 is s > True >>>> s2 = copy.copy(s) >>>> s2 is s > True > > copy.copy() is just an expensive no-op here. > I suppose wiht strings being immutable there is no need for copy.copy() to actually return anything other than its argument for a string. Thanks for pointing that out.
regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
