Python NameError名称的类未定义，但实际上是 [英] Python NameError The class of the name is not defined but it actually is

问题描述

我当时在玩类，因此我想创建一个名为Container的类，该类用于将所有可以容纳其他东西的东西分组。

I was playing with classes and I thought to create a class called Container which is meant to group all things that can hold other things.

# -*- coding: utf-8 -*-

class Container(object):
    def __init__(self, name, volume):
        self.name = name
        self.max_volume = volume

hands = Container('HANDS', 2)

我从这一点开始，然后我想测试是否一切正常，但是如果在python控制台中我调用 hands.name ，它说没有定义手。当我也将其导入为模块时，就会发生这种情况。

I started from this point and then I wanted to test if everything was ok but if in the python console I call hands.name it says that hands is not defined. This happens when I import it as a module too.

我没有弄错我的意思！

I don't get what I am doint wrong! Can you please explain me how to make it work?

我是从python控制台获得的：

I get from the python console:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'hands' is not defined

推荐答案

假设这是 container.py 文件：

# -*- coding: utf-8 -*-

class Container(object):
    def __init__(self, name, volume):
        self.name = name
        self.max_volume = volume

hands = Container('HANDS', 2)

这是您在解释器中的执行命令：

and this is your execution command in the interpreter:

>>> import container

然后， hands 实例为可通过以下方式访问：

Then, the hands instance is accessible in the following manner:

>>> container.hands.name

避免使用容器前缀，您也可以执行以下操作：

To avoid the container prefix, you can also do this:

>>> from container import hands
>>> hands.name

这篇关于Python NameError名称的类未定义，但实际上是的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！