Cosmia Luna wrote:
> I'm porting my existing work to Python 3.X, but...
>
> class Foo:
> def bar(self):
> pass
>
> mthd = Foo.bar
>
> assert mthd.im_class is Foo # this does not work in py3k
>
> So, how can I get a reference to Foo? This is important when writing
> decorators, the only way I can think out is:
>
> class Foo:
> def bar(self):
> 'Foo' # manually declare the owner class
> pass
>
> mthd = Foo.bar
>
> assert mthd.__globals__[mthd.__doc__] is Foo # this works
>
> class Child(Foo):
> def bar(self):
> 'Child' # I have to override all method defined by bar but do
> nothing pass
>
> child_mthd = Child.bar
>
> assert child_mthd.__globals__[child_mthd.__doc__] is Child # this works
>
> But the code above is quite ugly and abuses the __doc__. Is there any
> equivalent in py3k of im_class?
class set_class:
def __init__(self, method):
self.method = method
def __get__(self, instance, class_):
if instance is None:
method = self.method
def f(*args, **kw):
return method(*args, **kw)
f.im_class = class_
f.__name__ = method.__name__
return f
return self.method.__get__(instance, class_)
class Foo:
def __init__(self, name):
self.name = name
@set_class
def bar(self):
print("%s says hello from bar()" % self)
def __str__(self):
return self.name
class Bar(Foo):
pass
assert Foo.bar.im_class is Foo
assert Bar.bar.im_class is Bar
Foo("Fred").bar()
Foo.bar(Foo("Fred"))
Bar("Fred").bar()
Bar.bar(Bar("Fred"))
The cleaner approach is probably:
Rule('/<action>/', endpoint=(RootController, RootController.otheraction))
...
Controller, method = endpoint
controller = Controller(Request(environ))
...
method(controller)
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