Grant Edwards wrote:
I want to subclass an IMAP connection so that most of the
methods raise an exception if the returned status isn't 'OK'.
This works, but there's got to be a way to do it that doesn't
involve so much duplication:
class MyImap4_ssl(imaplib.IMAP4_SSL):
def login(*args):
s,r = imaplib.IMAP4_SSL.login(*args)
if s!='OK':
raise NotOK((s,r))
return r
def list(*args):
s,r = imaplib.IMAP4_SSL.list(*args)
if s!='OK':
raise NotOK((s,r))
return r
def search(*args):
s,r = imaplib.IMAP4_SSL.search(*args)
if s!='OK':
raise NotOK((s,r))
return r
[and so on for another dozen methods]
A more tested version of my other email:
py> class C(object):
... def f(self, *args):
... print "f:", args
... def g(self, *args):
... print "g:", args
...
py> class D(C):
... pass
...
py> class Wrapper(object):
... def __init__(self, func):
... self.func = func
... def __call__(self, *args):
... print "wrapped"
... return self.func(*args)
...
py> for name in ['f', 'g']:
... wrapper = Wrapper(getattr(C, name))
... setattr(D, name, new.instancemethod(wrapper, None, D))
...
py> C().f()
f: ()
py> C().g(1)
g: (1,)
py> D().f()
wrapped
f: ()
py> D().g(1)
wrapped
g: (1,)
--
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