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POPython 2.6 on Windows: how to terminate subprocess.Popen with "shell=True" argument?
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  1. POPython 2.6 on Windows: how to terminate subprocess.Popen with "shell=True" argument?
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    copied!<p>Is there a way to terminate a process started with the subprocess.Popen class with the "shell" argument set to "True"? In the working minimal example below (uses wxPython) you can open and terminate a Notepad process happily, however if you change the Popen "shell" argument to "True" then the Notepad process doesn't terminate.</p> <pre><code>import wx import threading import subprocess class MainWindow(wx.Frame): def __init__(self, parent, id, title): wx.Frame.__init__(self, parent, id, title) self.main_panel = wx.Panel(self, -1) self.border_sizer = wx.BoxSizer() self.process_button = wx.Button(self.main_panel, -1, "Start process", (50, 50)) self.process_button.Bind(wx.EVT_BUTTON, self.processButtonClick) self.border_sizer.Add(self.process_button) self.main_panel.SetSizerAndFit(self.border_sizer) self.Fit() self.Centre() self.Show(True) def processButtonClick(self, event): if self.process_button.GetLabel() == "Start process": self.process_button.SetLabel("End process") self.notepad = threading.Thread(target = self.runProcess) self.notepad.start() else: self.cancel = 1 self.process_button.SetLabel("Start process") def runProcess(self): self.cancel = 0 notepad_process = subprocess.Popen("notepad", shell = False) while notepad_process.poll() == None: # While process has not yet terminated. if self.cancel: notepad_process.terminate() break def main(): app = wx.PySimpleApp() mainView = MainWindow(None, wx.ID_ANY, "test") app.MainLoop() if __name__ == "__main__": main() </code></pre> <p>Please accept for the sake of this question that "shell" does have to equal "True".</p>
 

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