No. It does not work. def make_staticmethod(inst, methodname): return getattr(inst, methodname) def pickle_function(method): return make_staticmethod, (method.im_self, method.im_func.__name__) copy_reg.pickle(new.function, pickle_function, make_staticmethod)
----- Original Message ---- From: Peter Otten <[EMAIL PROTECTED]> To: python-list@python.org Sent: Thursday, 3 July, 2008 12:13:45 PM Subject: Re: How to pickle bound methods srinivasan srinivas wrote: Please don't top-post. > Could you please explain the code breifly?? I am not getting what it does. >> import copy_reg >> import new >> >> def make_instancemethod(inst, methodname): >> return getattr(inst, methodname) >> >> def pickle_instancemethod(method): >> return make_instancemethod, (method.im_self, method.im_func.__name__) >> >> copy_reg.pickle(new.instancemethod, pickle_instancemethod, >> make_instancemethod) If you have a type that cannot be pickled because it is implemented in C you can make it "picklable" by registering it with the copy_reg.pickle() function. This function takes three arguments: 1 the type (here: new.instancemethod) 2 a function that takes an instance of the type. This returns a factory function and a tuple of the arguments this factory function needs to recreate the instance. 3 the factory function. In short the following must work, and out_method should do the same thing as in_method: factory, args = pickle_instancemethod(in_method) out_method = factory(*args) Now to your other problem, pickling static methods. The type of a static method is just new.function, the same as that of a global function. Global functions are already picklable, so the copy_reg mechanism doesn't kick in. Peter -- http://mail.python.org/mailman/listinfo/python-list Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/ -- http://mail.python.org/mailman/listinfo/python-list
