On Tue, 27 Dec 2005 02:42:18 -0800, novice wrote: > > hello over there! > I have the following question: > Suppose I created a class: class Point: > pass > then instanciated an instance: new = Point() > So now how to get the instance new as a string: like ' new ' ;
'new' is not a instance object, it is a name which happens to be bound to an instance object. new = Point() # bind 'new' to an instance new = 12 # now bind to an int new = float(new) # and now bind to a float del new # delete the name 'new' new = "Spanish Inquisition" # bind 'new' to a string Names can be bound to any object, but objects can't tell what name (or names!) they are bound to. foo = bar = Point() # both 'foo' and 'bar' are bound to the same instance > Is there any built in function or method > for eg: > > class Point: > def _func_that_we_want_(self): > return ....... > new._func_that_we_want_() ---> ' new ' This is generally impossible, and here is why: foo = Point() # create an instance of Point and bind it to the name 'foo' bar = foo # 'bar' also is bound to the same instance parrot = spam = eggs = bar # we have five names bound to the _same_ instance (NOT five copies) del foo # now we have only four If there was a method "_func_that_we_want_" that returns the name of the instance, what should it return? bar, parrot, spam or eggs? Objects can't tell what names they are bound to. If you tell us what you hoped to do with the name once you had it, perhaps we can suggest something else. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
