name 'FILE_SHARE_READ' is not defined

The error message "name 'FILE_SHARE_READ' is not defined" indicates that a variable or constant named FILE_SHARE_READ has not been defined in the current scope.

FILE_SHARE_READ is a constant value that is often used in file I/O operations in Windows operating systems. It specifies that a file can be opened for reading, and allows other processes to access the same file for reading at the same time.

To resolve this error, you need to ensure that the correct module or library is imported or included in your code, and that the necessary constants or variables are defined within the scope of your program.

相关问题

"FILE_SHARE_READ" is not defined

as a standalone term. It is a constant value that is used in programming to specify the type of access that can be granted to a file by different processes or threads.

In Microsoft Windows programming, FILE_SHARE_READ is a value that can be used as a parameter when opening a file using the CreateFile function. It specifies that the file can be opened for read access, and allows other processes or threads to access the file for reading as well.

The constant value is typically defined in a header file or library that is included in the source code of a program. If you are encountering an error message that says "FILE_SHARE_READ is not defined," it may indicate that the header file or library that defines this constant is not being properly included or referenced in your code.

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。