Flask streaming an audio file

flaskaudiostream.py

from flask import Flask, Response

app = Flask(__name__)


@app.route("/wav")
def streamwav():
    def generate():
        with open("signals/song.wav", "rb") as fwav:
            data = fwav.read(1024)
            while data:
                yield data
                data = fwav.read(1024)
    return Response(generate(), mimetype="audio/x-wav")


@app.route("/ogg")
def streamogg():
    def generate():
        with open("signals/song.ogg", "rb") as fogg:
            data = fogg.read(1024)
            while data:
                yield data
                data = fogg.read(1024)
    return Response(generate(), mimetype="audio/ogg")

if __name__ == "__main__":
    app.run(debug=True)

I want to delete that mp3 file as soon as it gets streamed.
I noticed that how streaming works :~

• First the server sends the file to client side.
• The client then streams using cache (idk much about it that how it works.)

So it doesn't matter that file still remains on server or not .
So I want to delete that music file to avoid server jamming and causing 507 errors.
What is the best option I can use ?

• after_this_request it is causing PermissionError: [WinError 32] The process cannot access the file because it is being used by another process:
• Send via headers. I found that we can only send the file as attachment, can't stream. So that we can delete file after setting headers and before return statements.
• Use crontab would be last option available.

What should I choose ?
If I'm wrong somewhere, Please correct me. 👀

---

Thank you! Worked like a charm. If someone runs into can't decode byte error, please make sure you're opening the file in 'rb' mode. I missed that the first time.