[Python-Dev] Merging PEP 310 and PEP 340-redux?

[Michele Simionato]

On 5/12/05, Benji York <benji at zope.com> wrote:
> if the file object had these methods:
> 
> def __enter__(self): return self
> def __exit__(self, *args): self.close()
> 
> you could write
> 
> do file('whatever) as f:
>      lines = f.readlines()
> 
> Or a lock:
> 
> def __enter__(self): self.aquire(); return self
> def __exit__(self, *args): self.release()
> 
> do my_lock:
>      a()
>      b()
>      c()

Ah, finally a proposal that I can understand! 
But maybe the keyword should be "let":

let lock:
   do_something

let open("myfile") as f:
    for line in f: do_something(line)

or even, without need of "as":

let f=file("myfile") :
    for line in f: do_something(line)

which I actually like more

             Michele Simionato