Re: how to get a class instance name during creation?
On Oct 3, 1:46 pm, Bruno Desthuilliers [EMAIL PROTECTED] wrote: dmitrey a écrit : hi all, I have a code z = MyClass(some_args) can I somehow get info in MyClass __init__ function that user uses z as name of the variable? I.e. to have __init__ function that creates field z.name with value z. This has been debated to hell and back. To make a long story short, here are two common use cases: x = MyClass() y = x del x objects = [MyClass() for i in range(100)] If you can come with a meaningfull answer to what's *the* name of any of the MyClass instance(s) in both cases, then please let us know... Hmmm, just thinking: What about a function: autoname( 'x= MyClass' ) which calls exec as well as determines the name? That could use 'code' and 'ast' modules and 'parse', or just take the first \w characters, assuming assignment, or: autoname( 'x', MyClass() ) which executes assignment and sets an attr or calls a method on the second arg. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to get a class instance name during creation?
On Oct 3, 9:46 pm, Bruno Desthuilliers [EMAIL PROTECTED] wrote: dmitrey a écrit : hi all, I have a code z = MyClass(some_args) can I somehow get info in MyClass __init__ function that user uses z as name of the variable? I.e. to have __init__ function that creates field z.name with value z. This has been debated to hell and back. To make a long story short, here are two common use cases: x = MyClass() y = x del x objects = [MyClass() for i in range(100)] If you can come with a meaningfull answer to what's *the* name of any of the MyClass instance(s) in both cases, then please let us know... I had seen the examples during google search, still I hoped for an answer to my exact situation. I know for sure there will be no renaming and creating like the above objects = [MyClass() for i in range(100)]. as for the z = MyClass(some, args, 'z') I had it in my mind but I hoped to have something automatic, w/o the arg 'z'. Regards, D. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to get a class instance name during creation?
dmitrey [EMAIL PROTECTED] writes: On Oct 3, 9:46 pm, Bruno Desthuilliers [EMAIL PROTECTED] wrote: x = MyClass() y = x del x objects = [MyClass() for i in range(100)] If you can come with a meaningfull answer to what's *the* name of any of the MyClass instance(s) in both cases, then please let us know... I had seen the examples during google search, still I hoped for an answer to my exact situation. I know for sure there will be no renaming and creating like the above objects = [MyClass() for i in range(100)]. You *know* this, *for sure*? The only way I can think of that would give you such certain knowledge that such a situation will not happen is an automated, full-coverage unit test suite of all code that uses your class. Which is an excellent position to be in, so I commend you on your diligence. So, why is it that you wish to restrict users of your class to never do such normal operations with instances as in the above examples? What problem are you solving by this restriction? -- \ “Holy human pressure cookers, Batman!” —Robin | `\ | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: how to get a class instance name during creation?
En Fri, 03 Oct 2008 15:04:01 -0300, dmitrey [EMAIL PROTECTED] escribió: I have a code z = MyClass(some_args) can I somehow get info in MyClass __init__ function that user uses z as name of the variable? I.e. to have __init__ function that creates field z.name with value z. No. I'd just write it as: z = MyClass(some, args, 'z') wich is pretty simple and readable (although you have to repeat the 'z'). All the alternative ways I know of require too much black magic. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: how to get a class instance name during creation?
dmitrey a écrit : hi all, I have a code z = MyClass(some_args) can I somehow get info in MyClass __init__ function that user uses z as name of the variable? I.e. to have __init__ function that creates field z.name with value z. This has been debated to hell and back. To make a long story short, here are two common use cases: x = MyClass() y = x del x objects = [MyClass() for i in range(100)] If you can come with a meaningfull answer to what's *the* name of any of the MyClass instance(s) in both cases, then please let us know... -- http://mail.python.org/mailman/listinfo/python-list
