name '_name_' is not defined

As an AI language model, I'm unable to determine the context in which you're encountering this error message. However, the error message typically means that a variable or function named '_name_' has not been defined in the current scope or program. It could be a typo or a missing import statement. Please provide more information or code snippets for me to assist you better.

相关问题

name __file__ is not defined

name '__file__' is not defined是一个常见的错误消息，它表示代码中对变量'__file__'的引用没有被定义。通常情况下，'__file__'是一个内置变量，用于表示当前脚本或模块的文件路径。然而，在某些情况下，例如在交互式解释器中或在没有明确指定文件路径的情况下运行代码时，'__file__'变量可能无法使用。

为了解决这个问题，你可以尝试以下方法之一：
1. 确保你的代码是在一个脚本或模块中运行的，而不是在交互式解释器中。在交互式解释器中，'__file__'变量是不可用的。
2. 在代码中使用绝对路径或相对路径来代替'__file__'变量。例如，你可以使用os.getcwd()函数来获取当前工作目录的路径。
3. 如果你使用的是Python 3.4或更高版本，你可以使用__file__属性来获取当前模块的文件路径，而不是使用'__file__'变量。例如，你可以使用inspect模块中的getfile()函数来获取当前模块的文件路径。

NameError: name '_Disk__name_' is not defined

This error occurs when you try to access a private attribute or method of a class in Python. In this case, it seems like you are trying to access the private attribute `__name__` of a class called `_Disk`.

In Python, any attribute or method that starts with two underscores is considered private and cannot be accessed from outside the class. However, Python does not actually prevent you from accessing these attributes or methods. Instead, it mangles the name by adding `_ClassName` before the attribute name, where `ClassName` is the name of the class.

So, in order to access the private attribute `__name__` of the `_Disk` class, you should use the mangled name `_Disk__name__`.

For example:

class _Disk:
    def __init__(self, name):
        self.__name__ = name

disk = _Disk("MyDisk")
print(disk._Disk__name__)  # Output: "MyDisk"

Note that accessing private attributes or methods is generally not recommended as it can make your code harder to maintain and debug. If possible, you should use public attributes and methods instead.