import types class Tracing: def __init__(self, name, bases, namespace): """Create a new class.""" self.__name__ = name self.__bases__ = bases self.__namespace__ = namespace def __call__(self): """Create a new instance.""" return Instance(self) class Instance: def __init__(self, klass): self.__klass__ = klass def __getattr__(self, name): try: value = self.__klass__.__namespace__[name] except KeyError: raise AttributeError, name if type(value) is not types.FunctionType: return value return BoundMethod(value, self) class BoundMethod: def __init__(self, function, instance): self.function = function self.instance = instance def __call__(self, *args): print "calling", self.function, "for", self.instance, "with", args return apply(self.function, (self.instance,) + args) Trace = Tracing('Trace', (), {}) class MyTracedClass(Trace): def method1(self, a): self.a = a def method2(self): return self.a aninstance = MyTracedClass() aninstance.method1(10) print aninstance.method2()
import types
class Tracing:
def __init__(self, name, bases, namespace):
"""Create a new class."""
self.__name__ = name
self.__bases__ = bases
self.__namespace__ = namespace
def __call__(self):
"""Create a new instance."""
return Instance(self)
class Instance:
def __init__(self, klass):
self.__klass__ = klass
def __getattr__(self, name):
try:
value = self.__klass__.__namespace__[name]
except KeyError:
raise AttributeError, name
if type(value) is not types.FunctionType:
return value
return BoundMethod(value, self)
class BoundMethod:
def __init__(self, function, instance):
self.function = function
self.instance = instance
def __call__(self, *args):
print "calling", self.function, "for", self.instance, "with", args
return apply(self.function, (self.instance,) + args)
Trace = Tracing('Trace', (), {})
class MyTracedClass(Trace):
def method1(self, a):
self.a = a
def method2(self):
return self.a
aninstance = MyTracedClass()
aninstance.method1(10)
print aninstance.method2()