Thank You for reply but .... I found solution suggested by You in a tutorial yesterday. For some reason it doesn't work in my case.
code: #mem-dictionary in Y class for storing objects #Y doesn't inherit from X for (i,v) in self.mem.items(): print " isinstance(x,X)" print isinstance(v,X) print "type(x) is X" print type(v) is X print v.__class__.__name__ print v.__class__ result: isinstance(x,X) False type(x) is X False <type 'list'> list Well I can handle my problem. I will give an extra field in class with it's name. But I thought that when a language has tools to learn a class of an object one should use it. [EMAIL PROTECTED] wrote: > This doesn't answer your whole post because it asked a lot of > questions. But as to finding out whether something is an instance of a > class: > > class X(object): > # ... defined as in your post > >>>> x = X('Fred') >>>> x > class X contains: >>>> type(x) is X > True >>>> isinstance(x,X) > True >>>> x.__class__.__name__ > 'X' > > Now for subclasses: > > class Y(X): > extrastuffinY = 1 > >>>> y = Y('Joe') >>>> type(y) is X > False >>>> isinstance(y,X) > True > > > consternation: > >> I can't find neither in tutorial nor with google It's all about >> isinstance, or __class__. >> How to test that an object is an instance of my X class?? -- http://mail.python.org/mailman/listinfo/python-list