NameError: name '_name_' is not defined这个错误如何改正

这个错误通常是因为代码中使用了未定义的变量或函数名。要解决这个问题，可以尝试以下几种方法：
1.检查代码中是否有拼写错误或语法错误，特别是变量和函数名是否正确。
2.确保变量或函数在使用之前已经被定义或导入。
3.如果变量或函数在其他模块中定义，需要确保已经正确导入该模块。
4.如果使用了类，需要确保已经正确实例化该类。
以下是一个例子，演示了如何避免这个错误：
# 定义一个函数
def print_name(name):
print("My name is", name)

# 调用函数
print_name("Alice")
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相关问题

NameError: name 'def__init__' is not defined

这个错误是因为在定义类的构造函数时，__init__ 函数名中的 def 和 __init__ 之间缺少了一个空格，应该是 def __init__(self, input_dim, hidden_dim, output_dim):。请注意在 Python 中，函数名和关键字之间应该有一个空格来区分它们。

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"
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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.