Back9 wrote: > Hi, > > Is this grammer working in Python? > > class test: > self._value = 10 > def func(self, self._value) > > When i try it, it complains about undefined self. > > i don't know why. > > TIA ... not exactly; try: class Test: _value = 10 def func(self): print id(self._value), self._value print id(Test._value), Test._value t = Test() t.func()