Oh, I underrstand class/object methods

Post #170,819 by Arkadiy 8/24/04 5:08:40 PM Reply	Oh, I underrstand class/object methods The classmethod() thing was just an example of decorator. Other good examples include foo=synchronized(foo), foo=traced(foo), foo=remote(machine_name, foo) and so on. Any thing that modifies the way function executes. BTW, FuManChu surreptitiously folded function attributes in there as well. I wonder if python is concistant enough that you can write not only def foo(): pass foo.author = "me" but also 1.owner = "me" or "blah".speaker = "me" :) -- "...was poorly, lugubrious and intoxicated." -- Patrick O'Brian, "Master and Commander"
Post #170,825 by FuManChu 8/24/04 5:18:41 PM Reply	You can't do that to builtins yet But you can usually subclass builtins and get what you want. PythonWin 2.3.2 (#49, Oct 2 2003, 20:02:00) [MSC v.1200 32 bit (Intel)] on win32. Portions Copyright 1994-2001 Mark Hammond (mhammond@skippinet.com.au) - see 'Help/About PythonWin' for further copyright information. >>> "thing".x = 0 Traceback (most recent call last): File "<interactive input>", line 1, in ? AttributeError: 'str' object has no attribute 'x' >>> a = "thing" >>> a.x = 0 Traceback (most recent call last): File "<interactive input>", line 1, in ? AttributeError: 'str' object has no attribute 'x' >>> class Thing(str): ... \tpass ... >>> a = Thing() >>> a.x = 0 >>> a.x 0 "Despite the seemingly endless necessity for doing so, it's actually not possible to reverse-engineer intended invariants from staring at thousands of lines of code (not in C, and not in Python code either)." Tim Peters on python-dev
Post #170,840 by ben_tilly 8/24/04 8:47:03 PM Reply	You can do that in Ruby You can't do it exactly like you suggested - since there is no method named owner on the number 1, you cannot call that method. You have to create the method first. This works: \nclass Fixnum;\n attr_accessor :owner;\nend\n\n1.owner = "me";\nputs 1.owner;\n Cheers, Ben To deny the indirect purchaser, who in this case is the ultimate purchaser, the right to seek relief from unlawful conduct, would essentially remove the word consumer from the Consumer Protection Act - [link\|http://www.techworld.com/opsys/news/index.cfm?NewsID=1246&Page=1&pagePos=20\|Nebraska Supreme Court]

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