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Re: many constructors in a class?

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In article <520c81f6$0$29885$c3e8da3$5496439d@news.astraweb.com>,
 Steven D'Aprano <steve@pearwood.info> wrote:

> [1] The constructor is __new__, not __init__. __init__ is called to 
> initialise the instance after __new__ constructs it.

True, but be warned that writing your own __new__() is quite rare and 
probably falls into the realm of dark magic.  If you're just starting 
out, learn about __init__(), and don't worry about __new__() at all.

For those of you coming from a C++ background, Python's __init__() is 
like C++'s constructor, and __new__() is more like operator new.  That's 
not a perfect analogy from a functional standpoint, but it's a good 
guide for how often you'll want to write each one.

And then, of course, there's __enter__() and __exit__(), which are like 
C++'s constructor and destructor, but that's another story :-)

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many constructors in a class? climb65 <climb65@laposte.net> - 2013-08-14 14:16 +0000
  Re: many constructors in a class? Phil Le Bienheureux <phil.le.bienheureux@gmail.com> - 2013-08-14 16:46 +0200
  Re: many constructors in a class? duncan smith <buzzard@invalid.invalid> - 2013-08-14 16:07 +0100
  Re: many constructors in a class? Beth McNany <beth.mcnany@gmail.com> - 2013-08-14 10:40 -0400
  Re: many constructors in a class? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-08-14 18:40 -0400
  Re: many constructors in a class? Steven D'Aprano <steve@pearwood.info> - 2013-08-15 07:23 +0000
    Re: many constructors in a class? Fábio Santos <fabiosantosart@gmail.com> - 2013-08-15 11:09 +0100
    Re: many constructors in a class? Roy Smith <roy@panix.com> - 2013-08-15 09:00 -0400

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