Please be aware that super() has it's own set of gotchas - it's not as clean as you would hope. For more info: http://fuhm.org/super-harmful/
(I'm not the author, I was referred to this article while struggling with wxPython and super()) -John Clark -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Laszlo Nagy Sent: Wednesday, April 04, 2007 4:09 PM To: Jarek Zgoda; python-list@python.org; [EMAIL PROTECTED] Subject: Re: calling super() Jarek Zgoda wrote: >> Hello, I have been trying to call the super constructor from my >> derived class but its not working as expected. See the code: >> >> class HTMLMain: >> def __init__(self): >> self.text = "<HTML><BODY>"; >> print(self.text); >> def __del__(self): >> self.text = "</BODY></HTML>"; >> print(self.text); >> >> class NewPage(HTMLMain): >> def __init__(self): >> print 'derive2 init' >> super(NewPage, self).__init__(); >> > > This should read: super(HTMLMain, self).__init__() > Definitely, this is not true. Well, it depends what the OP wanted to do here, but in 99.9% of the cases, you want to use class B(A): def method(self,*args): super(B,self).method(*args) Look at here: http://www.python.org/doc/2.3.5/lib/built-in-funcs.html#l2h-66 It tells that super(type,[self]) will """Return the superclass of type.""". So super(B) will return the superclass of B, that is A. The built-in function "super" is very useful when you have diamond-shaped inheritance and you only want each inherited method to be called only once, IN THE CORRECT ORDER. If you only have single inheritance class trees, then super(B,self).method(*args) is identical to A.method(self,*args). You only need to worry about method calling order when you use multiple inheritance. However, using super is much nicer than calling the method of the base class directly, and it is syntactically cleaner, since you will only have a single reference to the base class, in the class definition header. (E.g. you can change the base class by replacing one word in the source code...) Best, Laszlo -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
