<p>这不是装修工的工作。你想完全改变类的正常行为,所以这实际上是元类的工作。在</p>
<pre><code>import types
class CallAll(type):
""" MetaClass that adds methods to call all superclass implementations """
def __new__(meta, clsname, bases, attrs):
## collect a list of functions defined on superclasses
funcs = {}
for base in bases:
for name, val in vars(base).iteritems():
if type(val) is types.FunctionType:
if name in funcs:
funcs[name].append( val )
else:
funcs[name] = [val]
## now we have all methods, so decorate each of them
for name in funcs:
def caller(self, *args,**kwargs):
""" calls all baseclass implementations """
for func in funcs[name]:
func(self, *args,**kwargs)
attrs[name] = caller
return type.__new__(meta, clsname, bases, attrs)
class B:
def fn(self):
print 'B'
class A:
def fn(self):
print 'A'
class C(A,B, object):
__metaclass__=CallAll
c=C()
c.fn()
</code></pre>