# Encapsulation 封装 just convention 只是约定，实际还是能访问的 class Person: address='test' # class attribute def __init__(self,name,age): self.name=name self._age=age # non-public instance variables 实例变量 # public method def show_age(self): return self._age def get_age(self): return self._get_age() # non-public method def _get_age(self): return self._age p=Person('Pawn',26) print (p.address) print (p.name,p._age) print (p.show_age()) print (p._get_age())