擅长:python、mysql、java
<p>您需要创建虚拟方法,它通过Python中的agregation生成</p>
<pre><code>class Class1:
def __init__(self, string):
self.string = string
def getString(self):
print(self.string)
def setString(self, string):
return Class1(string)
A = Class1("I am A")
B = A.setString("I am B")
A.getString() # I am A
B.getString() # I am B
</code></pre>