Python print出现提示__main__.Observer object at 0x0224F3B0是何原因，,请问Python pri

Python print出现提示__main__.Observer object at 0x0224F3B0是何原因，,请问Python pri

请问Python print 的时候出现<__main__.Observer object at 0x0224F3B0是什么问题

class Observer(object):

def __init__(self,subject):    self.subject = subject    self.weather = self.subject.weather    self.subject.add_observer(self)def update(self,weather,temperature,tips):    self.weather = weather    self.temperature = temperature    self.tips = tips    self.display()def display(self):    return ("今日天气：{} \n今日气温： {} \n今日建议：{}").format(self.weather,self.temperature,self.tips)

class Weather(object):

def __init__(self):    self.observers = []    self.weather = ""    self.temperature = ""    self.tips = ""def add_observer(self,observer):    self.observers.append(observer)def delete_observer(self,observer):    if observer in self.observers:        self.observers.remove(observer)def notify(self):    for observer in self.observers:        observer.update(self.weather,self.temperature,self.tips)def add_data(self,weather,temperature,tips):    self.weather = weather    self.temperature = temperature    self.tips = tips    self.notify()

if name=='main':

subject= Weather()observer = Observer(subject)subject.add_data('多云转阴','10~23℃','请注意别感冒！')subject.add_observer('张三')subject.add_observer('李四')subject.add_observer('Ben')def Print():    ox = subject.observers    for o in ox:        weather_data = observer.display()        print("{}你好，以下是今日的天气播报：\n{}\n").format(o,weather_data)Print()

初学Python，在做观察者模式的时候发现print会打印出多余的东西

<main.Observer object at 0x0224F3B0>你好，以下是今日的天气播报：
今日天气：多云转阴
今日气温： 10~23℃
今日建议：请注意别感冒！

请问这是什么原因，以及解决之道

observer = Observer(subject)self.subject.add_observer(self)

print("{}你好，以下是今日的天气播报：\n{}\n").format(o,weather_data)

编橙之家文章，