Robert Bradshaw, 02.11.2010 23:21: > On Tue, Nov 2, 2010 at 3:11 PM, Vitja Makarov wrote: >> http://docs.python.org/reference/datamodel.html#basic-customization >> >> """Called to create a new instance of class cls. __new__() is a static >> method (special-cased so you need not declare it as such) that takes >> the class of which an instance was requested as its first argument. >> The remaining arguments are those passed to the object constructor >> expression (the call to the class). The return value of __new__() >> should be the new object instance (usually an instance of cls).""" > > I was actually thinking about cdef classes, where __new__ is much more > subtle. I didn't realize it was a static method that takes the class > as a first argument rather than just a class method.
It needs to be to support inheritance. You usually call the __new__ method of the superclass to create the instance that you return. So you must be able to pass the required class through the hierarchy explicitly. Stefan _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
