Use without file/Docker issues?

[JWBWork]

I'm having an issue with pyttsx3 and Docker running linux. For some reason my code works locally but once I try to run it in docker I have an issue where save_to_file doesn't create a file, and doesn't throw an errror. I only get the following error once I try to read form the file.

FileNotFoundError: [Errno 2] No such file or directory: '/app/tmp/file_name.mp3'

Here is my dockerfile

FROM python:3.7.9

COPY . /app
WORKDIR /app

RUN apt-get update && apt-get upgrade -y
RUN apt-get install espeak -y
RUN apt-get install ffmpeg -y
RUN apt-get install libespeak1 -y
RUN python -m pip install -U -r requirements.txt

EXPOSE 5000

RUN mkdir -p /app/tmp
RUN chmod +rw /app/tmp
ENTRYPOINT ["python", "app.py"]

I'm trying to write audio files to tmp so that I can read the file, send the bytes to my frontend web app, and then delete the file.
I explicitly create the tmp directory and grant permissions to write in the Dockerfile, and I've tested reading and writing a file to that directly - it just seems to be a problem with pyttsx3 on linux in Docker.

Is there any solution to this?
Or, even better, is there some way pyttsx3 can give me a byte array in memory or as an object? It would be nice to have options other than having the script immediatly recite the text, or write it to a file. At least be able to pass a file like object to save_to_file so I can then read that file like object instead of actually writing to a file only to immediatly delete it.

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[JWBWork]

Ok so it looks like this is the result of runAndWait not actually waiting.
When I ad this explicit check I can force the thread to wait until the file is created

while file_name not in os.listdir(tmp_path):
	socketio.sleep(1)

[Epicalert]

Ok so it looks like this is the result of runAndWait not actually waiting.
When I ad this explicit check I can force the thread to wait until the file is created

while file_name not in os.listdir(tmp_path):
	socketio.sleep(1)

Thanks, this workaround also fixes #149.

[jaredkeil]

Can anyone help find a similar fix without using socketio? Perhaps with the threading library? I'm not building a flask app. But having issues with engine.save_to_file() when giving a long string as the first arg. It appears pyttsx3 is cutting off after certain punctuation, as well as unpredictable reasons. On MacOS, using default driverName (nsss)

[TotallyAProgrammer]

@jaredkeil You should probably open a new issue since your issue sounds different enough to warrant one.

[JWBWork]

@jaredkeil if it's the same issue I was having I think you could just implement the sleep function from the time module?

from time import sleep

while file_name not in os.listdir(tmp_path):
	sleep(1)

[jaredkeil]

@JWBWork Thanks for the reply. I'm a little unsure when to run engine.save_to_file() and engine.runAndWait() in relation to the above snippet? Before, during or after the while loop? Or is this an edit in the package itself?

[JWBWork]

@JWBWork Thanks for the reply. I'm a little unsure when to run engine.save_to_file() and engine.runAndWait() in relation to the above snippet? Before, during or after the while loop? Or is this an edit in the package itself?

I ran the loop with the sleep function after calling the function to save to a file. Basically it looks like on Linux it wasn't actually waiting, so the loop does the waiting.

[Sokkero]

@JWBWork Hay, a little late to the thread but I encountered the same problem and also fixed it by simply using sleep(). Now that it is running I have the problem that the created files have terrible (truly awful) quality, barely even pronouncing any word.
Did you also struggle with this?