On Mon, Dec 1, 2008 at 6:04 AM, Rayene Ben Rayana <[EMAIL PROTECTED]> wrote: > Hello everybody, > > Is there an easy way to do something like this in python ? > >>>> red_car = MyVehicleClass() >>>> car = red_car >>>> car.labels() > ['red_car' , 'car' ] > > In other words, does an instance has access to its name pointers ?
In short, No. (Cue another debate over whether Python uses call-by-X semantics...) Typically people who want to do such things actually want/should use a dictionary mapping string keys to instance values instead. Note that in certain limited cases, voodoo involving the locals() or globals() built-in functions or the `inspect` module can work, but not in the common general case. But generally these techniques are considered bad style and kludgey unless you're writing a debugger or something equally meta, with using a dictionary as explained previously being much preferred. For example, for your particular code above, the following happens to work: [name for name, obj in locals().iteritems() if obj is car] #==> ['red_car' , 'car' ] But this will only give the names in the current function of the particular car object. Likewise, globals() works only for module-level names, and the `inspect` module's magic only works for names in calling functions (i.e. those below the current one in the callstack). Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com > > Thanks in advance, > > Rayene > > > -- > http://mail.python.org/mailman/listinfo/python-list > > -- http://mail.python.org/mailman/listinfo/python-list
