How to Terminate a Persistent Loop with User-Triggered Intervention?

Intervening in a Persistent Loop: User-Triggered Termination

In the context of your ongoing loop that handles serial data and records it in a CSV file, you seek a solution to empower users with the ability to halt the loop whenever they deem it appropriate. This request stems from the desire to provide flexibility and user control over data collection.

To address this need, one simple and widely used approach is to rely on the venerable Ctrl-C keyboard shortcut, which triggers the KeyboardInterrupt exception. This mechanism allows you to intercept the interrupt and terminate the loop without disrupting the script's subsequent execution.

Here's how you can incorporate this technique into your code:

<code class="python">try:
    while True:
        # Implement serial data processing and CSV writing here
except KeyboardInterrupt:
    pass</code>

Within the try block, the loop continuously iterates over your data-handling tasks. When the user presses Ctrl-C, the KeyboardInterrupt exception is raised. The except block gracefully handles this interruption by simply passing over it without further action. This allows the loop to terminate cleanly, while the script continues to execute.

With this implementation, you grant users the power to terminate the loop with a convenient keyboard command. This empowers them to control the data collection process and ensures that the script maintains its operational integrity afterward.

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