On Wed, Mar 2, 2016 at 10:57 AM, Rob Gaddi <rgaddi@highlandtechnology.invalid> wrote: > Peter Pearson wrote: > >> On Tue, 1 Mar 2016 18:24:12 +0100, ast wrote: >>> >>> It's not clear to me what arguments are passed to the >>> __new__ method. Here is a piece of code: >>> >>> >>> class Premiere: >>> >>> def __new__(cls, price): >>> return object.__new__(cls) >>> >>> def __init__(self, price): >>> pass >> [snip] >> >> Of course, maybe you don't need to define a __new__ method at all. >> Personally, I find that __init__ suffices for my simple needs. >> > > I tend to need __init__ on about half of the classes I write. I think > I've needed __new__ all of twice in the years I've been writing Python.
Typically there are only two reasons to override __new__: you potentially want to return an object of a different class than the class that was called, or you're subclassing an immutable type and need to handle the superclass arguments before they get passed to the constructor. -- https://mail.python.org/mailman/listinfo/python-list
