Wrapp

wrapper.py

class ValidateMethod(object):
    def __init__(self, *args, **kwargs):
        self._args = args or []
        self._kwargs = kwargs or {}
        
    def __call__(self, method):
        def wrap(context):
            assert isinstance(context, ValidateMethod)
            def wrapper(self, *args, **kwargs):
                # your code here...
                print context._args, context._kwargs,
                return method(self, *args, **kwargs)
            return wrapper
        return wrap(self)

class MyClass(object):
    @ValidateMethod(arg1, arg2)
    def get(self):
        print '...'

c = MyClass()
c.get()