How to record audio in Python without giving the duration in advance

Question

I am writing a function to record audio in python. I used libraries like pyaudio to achieve the goal. But the problem is I have to give the duration of the recording as an input. Is there a way to record audio until the user wants to?

I found a way to record the audio for any duration. The problem is 'Ctrl + C' to stop the recording is not working in 'pycharm'. The code is as follows.

import sys
import queue
import tempfile
import numpy as np
import sounddevice as sd
import soundfile as sf
assert np


q = queue.Queue()


def callback(indata, frames, time, status):
    """
    This is called from a separate thread for each audio block
    """
    if status:
        print(status, file=sys.stderr)
    q.put(indata.copy())


# Unique file name for every recording
filename = tempfile.mktemp(prefix='untitled_', suffix='.wav', dir='')
# Make sure the file is open before recording anything
with sf.SoundFile(filename, mode='x', samplerate=48000, channels=2) as file:
    with sd.InputStream(samplerate=48000, channels=2, callback=callback):
        print('#' * 80)
        print('press Ctrl+C to stop the recording')
        print('#' * 80)
        while True:
            file.write(q.get())

Literally in the docs http://people.csail.mit.edu/hubert/pyaudio/docs/#example-blocking-mode-audio-i-o — FHTMitchell, Jun 13 '18 at 08:16
@FHTMitchell It will be great if you can read the question once again!! — M. Danny, Jun 13 '18 at 08:19
So it doesnt work in your ide? Does it work when you run it from the terminal? — FHTMitchell, Jun 13 '18 at 08:20
So your question is actually -- how do i make this work in pycharm? I think that's quite a different question to the one you asked. It's also a bit off topic for stack overflow. — FHTMitchell, Jun 13 '18 at 08:22
The "proper" way to do this in pure Python without expecting commands to kill your process in terminal is to use separate threads via `threading`. See for e.g. [here](https://stackoverflow.com/questions/23100704/running-infinite-loops-using-threads-in-python). — alkasm, Jun 13 '18 at 09:03

How to record audio in Python without giving the duration in advance

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