52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
import subprocess
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import sys
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import PySimpleGUI as sg
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"""
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Demo Program - Realtime output of a shell command in the window
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Shows how you can run a long-running subprocess and have the output
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be displayed in realtime in the window.
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"""
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sg.theme('Dark Blue 3')
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def main():
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layout = [
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[sg.Output(size=(110,30), background_color='black', text_color='white')],
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[sg.T('Promt> '), sg.Input(key='-IN-', do_not_clear=False)],
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[sg.Button('Run', bind_return_key=True), sg.Button('Exit')] ]
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window = sg.Window('Realtime Shell Command Output', layout)
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while True: # Event Loop
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event, values = window.read()
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# print(event, values)
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if event in (sg.WIN_CLOSED, 'Exit'):
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break
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elif event == 'Run':
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runCommand(cmd=values['-IN-'], window=window)
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window.close()
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def runCommand(cmd, timeout=None, window=None):
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nop = None
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""" run shell command
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@param cmd: command to execute
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@param timeout: timeout for command execution
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@param window: the PySimpleGUI window that the output is going to (needed to do refresh on)
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@return: (return code from command, command output)
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"""
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p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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output = ''
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for line in p.stdout:
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line = line.decode(errors='replace' if (sys.version_info) < (3, 5) else 'backslashreplace').rstrip()
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output += line
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print(line)
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window.refresh() if window else nop # yes, a 1-line if, so shoot me
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retval = p.wait(timeout)
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return (retval, output)
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main()
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