您需要做UpdateGUI一个@classmethod，并使自己wrapper意识到self。一个工作示例：
class X(object):
@classmethod
def foo(cls, fun):
def wrapper(self, *args, **kwargs):
self.write(*args, **kwargs)
return fun(self, *args, **kwargs)
return wrapper
def write(self, *args, **kwargs):
print(args, kwargs)
class Y(X):
@X.foo
def bar(self, x):
print("x:", x)
Y().bar(3)
# prints:
# (3,) {}
# x: 3
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