Python 打包程序判断是否已经运行

代码如下：

# -*- coding: UTF8 -*-
from win32com.client import Dispatch
import win32com
import sys, os
from PyQt4 import QtCore, QtGui

class Logicpy(QtGui.QWidget):
    def __init__(self):
        super(Logicpy, self).__init__()
        self.resize(100, 100)
        mythis = os.path.basename(os.path.realpath(sys.argv[0]))   # 获得当前文件的名字
        exist = self.proc_exist(mythis)
        if exist:
            Ok = QtGui.QMessageBox.question(self, (u'提示'),(u'已经运行'), QtGui.QMessageBox.Yes)
            if Ok == QtGui.QMessageBox.Yes:
                exit()
                # QtCore.QCoreApplication.quit()
                # QtGui.qApp.quit  # 退出

    #判断该进程是否存在
    def proc_exist(self, process_name):
        is_exist = False
        wmi = win32com.client.GetObject('winmgmts:')
        processCodeCov = wmi.ExecQuery('select * from Win32_Process where name="%s"' %(process_name))
        if len(processCodeCov) > 2:
            is_exist = True
        return is_exist



if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    Logic = Logicpy()
    Logic.show()
    sys.exit(app.exec_())

效果：