Keyboard Interrupts with python s multiprocessing Pool смотреть онлайн

Keyboard interrupts are a common issue when working with Python's multiprocessing module. When you use the multiprocessing.Pool to parallelize tasks, you might find it challenging to handle keyboard interrupts (e.g., Ctrl+C) properly. In this tutorial, we'll walk through how to gracefully handle keyboard interrupts when using multiprocessing.Pool and provide code examples.
Before you proceed, make sure you have Python installed on your system. If not, you can download and install Python from python.org.
Additionally, this tutorial assumes basic knowledge of Python, the multiprocessing module, and terminal usage.
When you use multiprocessing.Pool, the child processes running parallel tasks may not respond immediately to keyboard interrupts. To handle this situation properly, you need to implement a mechanism that gracefully stops the processes and releases resources. Here's a step-by-step guide on how to do it:
Import the necessary modules:
Define a function that represents the task you want to parallelize. In this example, we'll create a simple function that sleeps for a while to simulate a time-consuming task:
Create a function that handles keyboard interrupts and safely terminates the pool of processes:
Create a function to execute your tasks using multiprocessing.Pool and call the handle_keyboard_interrupt function in a separate process to capture keyboard interrupts: