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                            - 在使用json的時候經常會遇到xxx is not JSON serializable，也就是無法序列化某些對象,dumps方法的cls函數中添加自定義的處理方法。
-  json.dumps序列化時對中文默認使用的ascii編碼.想輸出真正的中文需要指定ensure_ascii = False
    >jsondata = json.dumps(data, cls=DateEncoder, ensure_ascii=False)
```
class DateEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, datetime):
            return obj.strftime('%Y-%m-%d %H:%M:%S')
        elif isinstance(obj, date):
            return obj.strftime('%Y-%m-%d')
        else:
            return json.JSONEncoder.default(self, obj)
```

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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