有没有办法终止以 subprocess.Popen 类启动的进程,其中“shell”参数设置为“True”?在下面的最小工作示例中(使用 wxPython),您可以愉快地打开和终止记事本进程,但是如果您将 Popen“shell”参数更改为“True”,则记事本进程不会终止。
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()
为了这个问题,请接受“shell”确实必须等于“True”。