Question

我正在创建一个用于创建争议票据的数据结构，该票据存储了许多争议类型。每个争议类型都有自己的类，该类派生自基类，它只定义基本属性，例如争议类型的名称。 Disputes类是用户通过其生成请求的接口。问题是无法识别generate_dispute函数。

class BaseDispute:
    name = None

class dispute_type_foo(BaseDispute):
    name = 'foo'

    def response(self):
        return "foo"

class Disputes: 
    instance = None
    class __Disputes:
        types = {
            "foo":dispute_type_foo
        }

    def generate_dispute(self,type):
        if type in self.instance.types:
                        return self.instance.types[type]()

def __new__(cls):
    if not cls.instance:
        cls.instance = cls.__Disputes()
    return cls.instance

@staticmethod
def getInstance():
    return Disputes()


manager = Disputes.getInstance()
dispute = manager.generate_dispute('foo')
if dispute is not None:
    print(dispute.response())

我得到的错误是：

Traceback (most recent call last):
  File "Disputes.py", line 61, in <module>
dispute = manager.generate_dispute('RC75')
AttributeError: Disputes instance has no attribute 'generate_dispute'

Python类对象没有属性＆＃34; func_name＆＃34;

0 个答案: