setattr函数 学python编程难吗？
学python编程难吗？
你好，我很高兴回答你的问题。
作为Python用户，让我们谈谈个人感受。在工作中，我总是尝试用Python来代替shell，以便结合实际操作加深我的印象。下面是我的学习过程，了解学习python是否困难。
最后，我们可以根据自己的兴趣选择合适的开发框架来实现一些主要的功能需求。如scratch-crawler框架、Django框架、flash框架等，通过各种框架的使用，可以提高开发效率。随着我们自己项目的积累，python编程不再困难。
一开始一切都很困难。作为一种非常流行的语言，Python非常容易使用。然而，要走得更远，我们还需要继续深入研究。困难的程度取决于你付了多少钱。
好吧，就这些。我希望我的回答能帮助你。
我是穆恩叔叔，我喜欢操作和维护。欢迎关注并与您分享操作和维护的细节。
python__getattr__和__setattr__应该怎么理解？
getattruuuuu这是一个内置方法。当点号用于获取实例属性时，如果该属性不存在，则在设置类实例属性时自动调用uuuuuGetAttruuuuMethod
uuuSetAttruuuuuMethod，如j.name=5uSetAttruuuMethod self。[name]=5
因为这个类是从dict继承的，它是dict的超类
所以self[attr]=value相当于调用dict的下标方法
和a={}a[attr]=value
python类里的私有变量如何定义？
Python没有私有变量，任何定义的变量都可以直接调用，但一般来说，在定义的变量之前和之后添加两个下划线，并将该变量视为专用变量，如下代码所示：
class person:defuuuuu inituuuuuuuuu（self）：self.uuuu Privateuuuuu=100p=person（）print（“uuuuuu Privateuuuuuuuuuuuuuu：”，p.uuuu Privateuuuuuuu）print（“p contains variables:”，dir（p））
output:__100p是一个包含变量的：100p是一个包含100个P的100个P的100个P的100个P的100个P的100个P的100个P的100个P的100个P的100个P的100个P的包含变量：[“uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu100级的阶级，、“uuuuuDeluuuuuuuuuuuuuuuuuuuuuuuuuuu ”、、““ uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu“，” uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuprivateuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu。打印结果取决于其内部存储结构和输出方式。
您可以键入一个长的
>>>> set（“012345678910”）
set（[“1”、“0”、“3”、“2”、“5”、“4”、“7”、“6”、“9”、“8”
表示它以类似于二维数组的方式保存。首先，消除重复元素，然后按21436587的顺序将元素保存到二维数组中
setattr函数 python __call__ python中的set有什么用
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