This error message indicates that you need to fcntl This module was not found.
This issue typically occurs on Windows platforms, because fcntl These are system calls available on Unix-based platforms. Therefore, if your code uses them... fcntl For this module, you should check whether your code was written or executed in a Unix environment.
If you wish to use it on a Windows platform fcntl In such cases, you may consider using alternative libraries, for example. winreg、msvcrt perhaps ctypes class.
Additionally, if you are sure that you are running code in a Unix environment, it could be that your Python environment is not installed. fcntl Module. You can use it. pip install fcntl Run the command to install this module.
