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Dynamically parsing output #78
Description
Activity
I have noticed the same behaviour.
I found that you need to flush stdout from your python script to get the message event to fire. See this SO answer and comments for more information.
Some solutions are given here. However, I have tested both the -u option and the PYTHONUNBUFFERED environment variable (on windows) without success.
I have found two workarounds which work with python-shell on windows, though neither are ideal.
- Call sys.stdout.flush() whenever you want to fire the 'message' event
- preppend the code in this answer to my script before passing it to python-shell
Reacted by LaPriWaThis is actually not an error. Just you not setting the "pythonOptions: ['-u']," flag before running the script.
new PythonShell(scriptPath, { encoding: 'utf8', pythonPath: path.normalize(config().python), pythonOptions: ['-u'], // THIS ONE!!! args: args })
@MagnusPoppe, please actually read my previous comment.
The -u worked for me w/ python 3.6.0 on windows 10. What version of python are you using @brucedjones ?
no response from anyone in the thread for a couple months. Closing.
I used the functionality
shell.on('message', function(message){ console.log(message) }), and I am able to collect all output of my script, and log it AFTER the script has finished. I would like to parse output as it is printed (dynamically) so that I may implement a progress bar in my electron app. Is this possible with python-shell?