Python中私有属性“_“下划线和“__“双下划线区别

class MyClass:
    def __init__(self):
        self.public_attribute = "I am a public attribute"
        self._protected_attribute = "I am a protected attribute"
        self.__private_attribute = "I am a private attribute"
 
    def print_attributes(self):
        print(self.public_attribute)
        print(self._protected_attribute)
        print(self.__private_attribute)
 
 
obj = MyClass()
 
# Accessing public attribute
print(obj.public_attribute)
 
# Accessing protected attribute
print(obj._protected_attribute)
 
# Accessing private attribute using its mangled name
print(obj._MyClass__private_attribute)
 
# Printing all attributes using method
obj.print_attributes()
 
# Accessing private attribute
# This will raise an AttributeError
print(obj.__private_attribute)