问题描述
我想验证我使用复合和受保护对象方法的方式是否正确。 此处将示例代码放在我使用 B 类对象访问 A 类方法的位置。
class A:
# initialisation of class A
def __init__(self):
pass
# method a,I want to call this method from other's object
def method_a(self):
print("Perform operation a")
class B:
def __init__(self):
# initialisation of class B
# Creating composite and protected object
self._a = A()
# introducing a method to support a method of a protected object(self._a)
def via_b(self):
# calling method of class A
self._a.method_a()
# creating object of class B
b = B()
#Way1: # is this valid to call?
b._a.method_a()
# Way2: or I should use this?
b.via_b()```
In way 2 I see the disadvantage that just to use a method of class A,need to introduce a method in class B.
Can I use Way 1 in code?
解决方法
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