how do I run multiple python scripts simultaniously using QProcess

Question

I am trying to run multiple python scripts simultanuosly using QProcess from inside a GUI. The following will execute the first script and throw QProcess::start: Process is already running for the other two scripts.

def run(self):
    self.p = QtCore.QProcess()
    scripts = ['python ./scripts/s1.py', 'python ./scripts/s2.py', 'python ./scripts/s3.py']
    for s in scripts:            
        self.p.start(s)

musicamante · Accepted Answer · 2021-02-20 18:01:58Z

1

You can't reuse the same QProcess if it's already running, as the error reports.

Just create a list of processes instead:

    def run(self):
        self.processes = []
        scripts = [
            'python ./scripts/s1.py', 
            'python ./scripts/s2.py', 
            'python ./scripts/s3.py'
        ]
        for script in scripts:
            process = QtCore.QProcess()
            self.processes.append(process)
            process.start(script)

answered Feb 20, 2021 at 18:01

musicamante

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