__init__ vs __new__
danielkleinad at gmail.com
Thu Jan 11 15:39:39 CET 2007
I've have a program that is using both of the methods below (in
different classes of course) for initializing the class. The example
below shows a class with the 2 methods with one commented out.
"Represents a list of arguments for external subroutine calls."
# We only need to override methods which add objects to the list.
def __init__(self, alist = ):
for objekt in alist: _validateParameter(objekt)
#def __new__(cls, alist = ):
# for objekt in alist: _validateParameter(objekt)
# return list.__new__(cls, alist)
I don't really notice any behavioral difference. Is there in fact any
difference in using one over the other? Performance? Side effects? ???
I am using Python version 2.5.
More information about the Python-list