Farshid Lashkari wrote: >>It takes far too little evidence to induce belief: >> >> >>> a = "hello" >> >>> b = "h"+"ello" >> >>> a is b >>False >> >>> c = "hello" >> >>> b is a >>False >> >>> > > > I don't understand the point of your last expression. Were you intending > this instead: > > >>> c is a > True > Yes.
> However, the following commands add to my confusion: > > >> a = 'wtf?' > >> b = 'wtf?' > >> a is b > False > > So how are string literals cached? Is there an explanation somewhere? Is > it some freaky voodoo, and I should just assume that a string literal > will always generate a new object? > I really don't understand why it's so important: it's not a part of the language definition at all, and therefore whatever behavior you see is simply an artifact of the implementation you observe. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
