[Python-Dev] New PEP: 319

[Roman Suzi]

On Mon, 16 Jun 2003, Michel Pelletier wrote:

> > On Mon, 16 Jun 2003, Michel Pelletier wrote:
> >
> >>             def __init__(self):
> >>                  self.counter = 0
> >>
> >>             def increment(self):
> >>                 synchronize:
> >>                     self.counter += 1
> >
> > What about just adding a parameter to try operator?
> >
> >              def increment(self):
> >                  try self.counter_lock:
> >                      self.counter += 1
> 
> Because I would like to remove the user-visible lock entirely.  Although
> your idea is similar to PEP 310, which proposes a new keyword "with".  I
> think using the try keyword for this is inapropriate.

But is it such a good idea to do? What if critical section is at two or
more different places at once? How will you deal with

              def increment(self):
                  try self.counter_lock:
                      self.counter += 1

              def decrement(self):
                  try self.counter_lock:
                      self.counter -= 1

(Suppose, it's not simple or elegant to do it in one place:

              def change(self, delta=1):
                  try self.counter_lock:
                      self.counter += delta

)

As for with, it could be added as follows:

   try with lock:
     lalalala



 
> -Michel

Sincerely yours, Roman A.Suzi
-- 
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