On Fri, Jun 4, 2010 at 1:53 PM, Roald <downa...@gmail.com> wrote:
> class my_view(HttpResponse):
> __metaclass__ = ABCMeta
>
> def __init__(self, *args, **kwargs):
> print 'init my_view'
>
> def __new__(cls, *args, **kwargs):
> if some_condition():
> return some_view(*args, **kwargs)
> elif other_condition():
> return some_standard_response(*args, **kwargs)
> else:
> ...
> return object.__new__(cls)
>
>
> my_view.register(some_view)
> my_view.register(some_standard_response)
>
>
> This (or something like it) seems to be able to take the best of the
> __new__ and __init__ options.
Uhm... guys,
Maybe something simpler?
---- 8< ----
from threading import local, Thread
class View(object):
_child = local()
def __new__(cls, *args, **kwargs):
existing = hasattr(cls._child, 'instance')
if not existing:
print 'first time in this thread'
cls._child.instance = super(View, cls).__new__(cls, *args, **kwargs)
return cls._child.instance
def __call__(self, foo):
print 'call', id(self), foo
return 'bar'
test = View()
test(1)
test = View()
test(2)
test = View()
test(3)
class TestThread(Thread):
def run(self):
test = View()
test(4)
t = TestThread()
t.setDaemon(True)
t.start()
t.join()
test = View()
test(5)
---- 8< ----
Try it now, tests itself.
--
Patryk Zawadzki
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