[EMAIL PROTECTED] schrieb: > Hello, > > I am testing object identity. > > If I do it from the interpreter, I get strange results. > >>>> print [] is [] > False > >>>> print id([]), id([]) > 3083942700 3083942700 > > > > Why is that? Isn't this an error?
No, it's not an error. You are getting this result because the list implementation keeps a bunch of unused list objects in a free list. It's an optimization trick. Python has to create two different list objects for "[] is []" while it can reuse the same list object for id([]) == id([]). Christian -- http://mail.python.org/mailman/listinfo/python-list
