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Q&A Listen for key events in a CLI app

I have a Python program like this: done = False while u and not done: i = u.pop() print(f"Processing {i}") do_big_task(i) finish_up() Since this takes a long time, the user m...

1 answer  ·  posted 1y ago by matthewsnyder‭  ·  last activity 1y ago by mr Tsjolder‭

#2: Post edited by user avatar matthewsnyder‭ · 2023-09-07T16:34:28Z (over 1 year ago)
  • I have a Python program like this:
  • ```python
  • done = False
  • while u and not done:
  • i = u.pop()
  • print(f"Processing {i}")
  • do_big_task(i)
  • finish_up()
  • ```
  • Since this takes a long time, the user might get tired of waiting. I want the program to also continually listen for a keystroke, such as space, and if the user presses this `done` will be set to `True` so that the loop will automatically stop at the next iteration.
  • How can I do this?
  • I have a Python program like this:
  • ```python
  • done = False
  • while u and not done:
  • i = u.pop()
  • print(f"Processing {i}")
  • do_big_task(i)
  • finish_up()
  • ```
  • Since this takes a long time, the user might get tired of waiting. I want the program to also continually listen for a keystroke, such as space, and if the user presses this `done` will be set to `True` so that the loop will automatically stop at the next iteration.
  • Note that I still want `finish_up()` to run even if the loop is terminated early.
  • How can I do this?
#1: Initial revision by user avatar matthewsnyder‭ · 2023-09-06T02:01:32Z (over 1 year ago)
Listen for key events in a CLI app
I have a Python program like this:
```python
done = False
while u and not done:
    i = u.pop()
    print(f"Processing {i}")
    do_big_task(i)

finish_up()
```

Since this takes a long time, the user might get tired of waiting. I want the program to also continually listen for a keystroke, such as space, and if the user presses this `done` will be set to `True` so that the loop will automatically stop at the next iteration.

How can I do this?