def decref(self, obj):
    fnty = Type.function(Type.void(), [self.pyobj])
    fn = self._get_function(fnty, name='Py_DecRef')
    self.builder.call(fn, [obj])
def decref(self, obj):
    fnty = Type.function(Type.void(), [self.pyobj])
    fn = self._get_function(fnty, name='Py_DecRef')
    self.builder.call(fn, [obj])