Python subprocess.call not waiting for process to finish blender

You can use subprocess.call to do exactly that.

subprocess.call(args, *, stdin=None, stdout=None, stderr=None, shell=False, timeout=None)

Run the command described by args. Wait for command to complete, then return the returncode attribute.

Edit: I think I have a hunch on what's going on. The command works on your Mac because Macs, I believe, support Bash out of the box (at least something functionally equivalent) while on Windows it sees your attempt to run a ".sh" file and instead fires up Git Bash which I presume performs a couple forks when starting.

Because of this Python thinks that your script is done, the PID is gone.

If I were you I would do this:

• Generate a unique, non-existing, absolute path in your "launching" script using the tempfile module.
• When launching the script, pass the path you just made as an argument.
• When the script starts, have it create a file at the path. When done, delete the file.
• The launching script should watch for the creation and deletion of that file to indicate the status of the script.

Hopefully that makes sense.

You can use Popen.communicate API.

p1 = subprocess.Popen(os.path.abspath('D:/Test/run-my-script.sh'),shell=True)sStdout, sStdErr = p1.communicate()

The command

Popen.communicate(input=None, timeout=None)

Interact with process: Send data to stdin. Read data from stdout and stderr, until end-of-file is reached. Wait for the process to terminate.

subprocess.run will by default wait for the process to finish.