The problem with "as" [was "Re: PEP 318"]

[Marco Bubke]

Stephen Horne wrote:

> On 22 Mar 2004 16:43:18 -0800, Paul Rubin
> <http://phr.cx@NOSPAM.invalid> wrote:
> 
>>DH <no at sp.am> writes:
>>> Possible future Python example that uses "as" differently:
>>>
>>> def foo(x as int, y as float) as int:
>>>     "this function returns an integer, and takes an int & float params"
>>
>>I think I'd rather use colons for that, like Pascal does, e.g.
>>
>>  def foo:int (x: int, y: float)
>>
>>hmm, the foo:int doesn't look too good.
> 
> In Ada, the type of a function return value is specified using an
> explicit keyword ('returns' IIRC). I don't see the need for a unique
> keyword just for that, but how about...
> 
> def foo (x: int, y: float) return int [decorators] :
> def foo (x: int, y: float) yield  int [decorators] :


I like :
def foo(x=42:int, y=3.14:float) [return(string)]:


def foo[return(string)](x=42:int, y=3.14:float):

looks strange to me. Its very unreadable. Its maybe the first time I really
disagree with a Idea of Guido. :-)