Marcin201 a écrit :
Others have already replied to your main question; in short you
shouldn't rely on __del__ being called. Regardless, is there a (good)
reason for having an instance reference to the method ? Without
further information, that seems like a code smell.
I have dictionary of fxns to do import/export based on the type of
request from user so I can call self.Import['html'] or
self.Import['text'].
getattr(obj, name) is your friend. And if you really want to maintain
your own mapppings, do it at the appropriate level - that is, when it
comes to methods, at the class level, not the instance level. You can
even automate this using a decorator and a custom metaclass, ie
(warning: Q&D code, not tested, may contain errors etc):
# myframework.py
def request_handler(func):
func._request_handler = True
return func
class RequestHandlerType(type):
def __init__(cls, name, bases, dic):
handlers = getattr(cls, '_handlers')
for name, attrib in dic:
if getattr(attrib, '_request_handler', False):
handlers[name] = attrib
cls._handlers = handlers
class BaseRequestHandler(object):
__metaclass__ = RequestHandlerType
# myapp.py
from myframework impoty request_handler, BaseRequestHandler
class MyHandler(BaseRequestHandler):
@request_handler
def html(self, *args, **kw):
# code here
@request_handler
def text(self, *args, **kw):
# code here
def dispatch(self, request):
format = request.format
try:
handler = self._handlers[format]
except KeyError:
# raise appropriate exception here
else:
return handler(self, request)
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