Frank Millman wrote:
On Aug 26, 10:54 am, Chris Rebert <c...@rebertia.com> wrote:
On Wed, Aug 26, 2009 at 1:22 AM, Frank Millman<fr...@chagford.com> wrote:
A
class MyClass(object):
def on_message_received(self, msg):
self.method_dict[msg](self)
def method_0(self):
print 'in method_0'
def method_1(self):
print 'in method_1'
method_dict
method_dict = {0: method_0, 1: method_1}
#note this comes *after* the methods in question have been defined
Thanks, Chris. This is much better.
Is there some reason you aren't using a list instead of a dict?
e.g. method_dict = [method_0, method_1, method_2, etc]
For that matter, why are you associating methods with integers in the
first place?
I actually use constants to define my messages, like this -
(MESSAGE_ONE
,MESSAGE_TWO
,MESSAGE_THREE
) = xrange(3)
I can then refer to the messages by their description, but internally it
uses integers.
An alternative is:
>>> class MyClass(object):
... def on_message_received(self, msg):
... try:
... getattr(self, "method_%d" % msg)()
... except AttributeError:
... raise Exception("Unknown message")
... def method_0(self):
... print 'in method_0'
... def method_1(self):
... print 'in method_1'
...
>>> my_obj = MyClass()
>>> my_obj.on_message_received(0)
in method_0
>>> my_obj.on_message_received(1)
in method_1
>>> my_obj.on_message_received(2)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 6, in on_message_received
Exception: Unknown message
>>>
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