Скачать или смотреть How do I capture SIGINT in Python

Capturing the SIGINT signal (interrupt signal) in Python allows you to handle keyboard interrupts gracefully. This is particularly useful when your script is running in the terminal, and you want to perform cleanup operations or handle the interruption in a controlled manner. In Python, you can capture the SIGINT signal using the signal module. Here's a step-by-step tutorial with a code example:
The signal module provides facilities to register and handle signal handlers.
Create a function that will be called when the SIGINT signal is received. This function will handle the cleanup or any other actions you want to perform when the user presses Ctrl+C.
In this example, the function simply prints a message and exits the script with a status code of 0. You can replace this with your specific cleanup operations.
Now, register the signal handler function with the signal module. You need to associate the SIGINT signal (interrupt signal) with your custom handler.
This line tells the program to call sigint_handler when the SIGINT signal is received.
Now, you can run your script as usual. If the user presses Ctrl+C during execution, the registered signal handler (sigint_handler in this case) will be called.
In this example, the main script logic is placed inside a try block, and it catches a KeyboardInterrupt exception to provide an additional way to handle the interruption. The signal handler will also be triggered if Ctrl+C is pressed. Adjust the script according to your specific use case and cleanup requirements.
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