Mac wrote:
> Is there a nice Python idiom for constructors which would expedite the
> following?
>
> class Foo:
> def __init__(self, a,b,c,d,...):
> self.a = a
> self.b = b
> self.c = c
> self.d = d
> ...
py> class Foo(object):
... def __init__(self, a, b, c, d):
... params = locals()
... del params['self']
... self.__dict__.update(params)
...
py> vars(Foo(1, 2, 3, 4))
{'a': 1, 'c': 3, 'b': 2, 'd': 4}
Just make sure that "params = locals()" is the first line in __init__
method. (Otherwise you might have other local variables slip in there.)
I wouldn't actually advise this code to anyone though. I find that if I
have more than 3 or 4 parameters to a function, I should probably
refactor my code. And with 4 or fewer parameters, I don't think you
gain any clarity by using the "self.__dict__.update" trick.
STeVe
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