def write(self): if not self.write_expr: return None return Engine.compile(self.write_expr)
def write(self): if not self.write_expr: return None return Engine.compile(self.write_expr)
def read(self): if not self.read_expr: return None return Engine.compile(self.read_expr)
def read(self): if not self.read_expr: return None return Engine.compile(self.read_expr)