37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
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import subprocess
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import PySimpleGUI as sg
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import threading
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"""
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Demo - Run a shell command while displaying an animated GIF to inform the user the
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program is still running.
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If you have a GUI and you start a subprocess to run a shell command, the GUI essentually
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locks up and often the operation system will off to terminate the program for you.
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This demo fixes this situation by running the subprocess as a Thread. This enables
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the subproces to run async to the main program. The main program then simply runs a loop,
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waiting for the thread to complete running.
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The output from the subprocess is saved and displayed in a scrolled popup.
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"""
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def process_thread():
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global proc
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proc = subprocess.run('pip list', shell=True, stdout=subprocess.PIPE)
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thread = threading.Thread(target=process_thread, daemon=True)
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thread.start()
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while True:
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sg.popup_animated(sg.DEFAULT_BASE64_LOADING_GIF, 'Loading list of packages', time_between_frames=100)
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thread.join(timeout=.1)
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if not thread.is_alive():
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break
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sg.popup_animated(None)
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output = proc.__str__().replace('\\r\\n', '\n')
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sg.popup_scrolled(output)
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