[PySide] PyInstaller Main Window Duplicating Infinitely (Win 10)

[paul basinger]

Hi Israel,

That fixed it. Thank you!

Paul

On Wed, Sep 4, 2019 at 5:58 PM Israel Brewster <ijbrewster at alaska.edu>
wrote:

> On Sep 4, 2019, at 1:52 PM, paul basinger <paulcb213 at gmail.com> wrote:
>
> Hello,
>
> After making an exe from pyinstaller, the code below causes the main
> window to duplicate repeatedly. I haven't tried it with QProcess yet but I
> started looking into it. Anyone know python's multi-processes equivalent in
> PySide2/QT. It runs fine when run normally with python (3.7).
>
> Thanks,
>
> Software Engineer
> Paul Basinger
> paulcb213 at gmail.com
>
>
> Try adding, at the very beginning (before you do any PySide2 imports):
>
> from multiprocessing import freeze_support
>
> I want to say that’s what fixed this for me. It’s fine to import this even
> when not frozen, but it should fix things when using pyinstaller.
> ---
> Israel Brewster
> Software Engineer
> Alaska Volcano Observatory
> Geophysical Institute - UAF
> 2156 Koyukuk Drive
> Fairbanks AK 99775-7320
> Work: 907-474-5172
> cell:  907-328-9145
>
>
> import sys
> import threading
> import random
> from PySide2.QtWidgets import QApplication, QLabel
> from PySide2.QtCore import QThread
> from multiprocessing import Process, Queue, Manager
>
> def hello(q):
>     q.put(1)
>
> class AppThread(QThread):
>     def __init__(self, parent):
>         super(AppThread, self).__init__(parent)
>
>     def run(self):
>         self.loadApp()
>
>     def loadApp(self):
>         q = Queue()
>         p = Process(target=hello, args=(q,))
>         p.start()
>         q.get(timeout=1)
>         p.join()
>
> if __name__ == "__main__":
>     app = QApplication(sys.argv)
>     label = QLabel("Hello World")
>     label.show()
>     thread = AppThread(app)
>     thread.start()
>     sys.exit(app.exec_())
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