#  #

## 1 ##



```python
class UserInfo(object):
    name=''
```

## 2 ##



```python
class UserInfo(object):
    def __init__(self,name):
        self.name=name
```

## 3 ##

 Java  public   private  Python 

 `__private_attrs`  `self.__private_attrs`

 Python  Python 

![Python ](http://upload-images.jianshu.io/upload_images/2136918-4ac2643aa5b0fa37?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)



```python

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

class UserInfo(object):
    def __init__(self, name, age, account):
        self.name = name
        self._age = age
        self.__account = account

    def get_account(self):
        return self.__account


if __name__ == '__main__':
    userInfo = UserInfo('', 23, 347073565);
    # 
    print(dir(userInfo))
    # 
    print(userInfo.__dict__)
    print(userInfo.get_account())
    # 
    print(userInfo._UserInfo__account)


```



![Python ](http://upload-images.jianshu.io/upload_images/2136918-de89d4dc5f5f9f77?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)