使用_插槽时，对象的描述符不应用于对象__

Question

早上好

我在我的一门课上尝试使用插槽时遇到问题。我想用它来优化分类器对象的多个实例的创建。我正在使用Python 3.7.1

这很有效

class Classifier() :

    def __init__(self, own_storage, partner_storage, decision, strength) :

        self.own_storage = own_storage
        self.partner_storage = partner_storage
        self.decision = decision
        self.strength = strength

这不起作用

class Classifier() :

    __slots__ = ('own_storage', 'partner_storage', 'decision', 'strength')

    def __init__(self, own_storage, partner_storage, decision, strength) :

        self.own_storage = own_storage
        self.partner_storage = partner_storage
        self.decision = decision
        self.strength = strength

这里是我创建分类器的所有实例（它是另一个类的方法）

def allClassifiers(self) :

        cs = []
        own_range = []
        partner_range = []

        for i in range(1, self.agent.model.n_types + 1) :

            own_range.append(i)
            own_range.append(-i)
            partner_range.append(i)
            partner_range.append(-i)


        for own in own_range :

            for partner in partner_range :

                for decision in [0, 1] :

                    cs.append(Classifier(own, partner, decision, i))

        return cs  

我收到的错误：

Traceback (most recent call last):

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\test.py", line 53, in <module>
    m = Model(10000, 1, 1, init_distribution = [0, 1, 1, 0], state_t = "uniform")

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\model.py", line 53, in __init__
    a = Agent(id_, i, self, production_i, h)

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\agent.py", line 31, in __init__
    self.cs = ClassifierSystem(self)

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier_system.py", line 17, in __init__
    self.classifiers = self.allClassifiers()

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier_system.py", line 41, in allClassifiers
    cs.append(Classifier(own, partner, decision, i))

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier.py", line 7, in __init__
    self.own_storage = own_storage

TypeError: descriptor 'own_storage' for 'Classifier' objects doesn't apply to 'Classifier' object

我看过很多关于如何使用插槽的例子，但我不知道我犯了什么错误。谢谢你的帮助

编辑： 如果我尝试这个代码，它会工作

class Classifier() :

    __slots__ = ('own_storage', 'partner_storage', 'decision', 'strength')

    def __init__(self, own_storage, partner_storage, decision, strength) :

        self.own_storage = own_storage
        self.partner_storage = partner_storage
        self.decision = decision
        self.strength = strength

    c = []
    for i in range(0, 70) :      
        c.append(Classifier(1, 2, 1, i))

另外，如果我把这段代码的最后3行放在allClassifiers函数中（我在问题中提到的代码的第三部分），它也可以工作

编辑2: 我不明白Spyder的工作原理。从shell运行程序，它在任何情况下都能完美工作。 使用Spyder时，删除上一次运行的变量后，插槽版本现在可以工作，没有插槽的版本会出现以下错误：

Traceback (most recent call last):

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\test.py", line 53, in <module>
    m = Model(10000, 1, 1, init_distribution = [0, 1, 1, 0], state_t = "uniform")

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\model.py", line 53, in __init__
    a = Agent(id_, i, self, production_i, h)

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\agent.py", line 31, in __init__
    self.cs = ClassifierSystem(self)

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier_system.py", line 17, in __init__
    self.classifiers = self.allClassifiers()

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier_system.py", line 41, in allClassifiers
    cs.append(Classifier(own, partner, decision, i))

  File "C:\Users\Diru\Desktop\Internship\Sketch\classes\classifier.py", line 7, in __init__
    self.own_storage = own_storage

AttributeError: 'Classifier' object has no attribute 'own_storage'

至少现在我知道问题是我不知道如何使用Spyder

Answer 1

我也面临同样的问题。
解决方案：重新启动Spyder。
希望它能解决这个问题