Mailman 3 __autoinit__ (Was: Proposal: reducing self.x=x; self.y=y; self.z=z boilerplate code) - Python-Dev

31 Jul 2005


      Hello python-list,
As I Understood, semantic may be next:
def qwerty(a,a.i,b,b.i,f.j):
        pass
Would work like:
def qwerty(anonymous1,anonymous2,anonymous3,anonymous4,anonymous5):
        (a,a.i,b,b.i,f.j)=(anonymous1,anonymous2,anonymous3,anonymous4,anonymous5)
        del anonymous1
        del anonymous2
        del anonymous3
        del anonymous4
        del anonymous5
If so then I like it, because it more explicit than anything other
and it is working right now. I just tryed:
...
...
...
class Stub:
...     pass
...
...
...
def qwer(a1,a2,a3,a4,a5):
...     (a,a.i,b,b.i,f['i'])=(a1,a2,a3,a4,a5)
...     del a1
...     del a2
...     del a3
...     del a4
...     del a5
...     print (a,a.i,b,b.i,f['i'])
...
...
...
f={}
qwer(Stub(),1,Stub(),2,3)
(<__main__.Stub instance at 0x00C49530>, 1, <__main__.Stub instance at 0x00C498C8>, 2, 3)
So there are not too much for implement.
Another question - named arguments. How I can assign to them?
May be so:
f={}
def qwerty(a,a.i,f['i']):
    print (a,a.i,f['i'])
qwerty(f['i']=3,a=Stub(),a.i=4) - ?
and for __init__:
class MyClass:
    def __init__(self,self.i,self.j,self.k):
        pass
MyObject = MyClass(self.i=1,self.j=2,self.k=3)
?
or may be there can be an aliase syntax?
class MyClass:
    def __init__(self, self.i by i,self.j by j, self.k by k):
        pass
MyObject = MyClass(i=1,j=2,k=3)
--
Sokolov Yura
falcon@intercable.ru