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class ExeWrapper():
    def __init__(self, PI_Exe):
        self.exename    = PI_Exe
        self.args       = []
        self.proc       = 0
        self.stdoutput  = []
        self.stderr     = []

    def AddArg( self, PI_Arg ):
        self.args.append( PI_Arg )

    def Run(self):
        args = []
        args.append( self.exename )
        args.extend( self.args )
        self.proc = subprocess.Popen( args, stdout=subprocess.PIPE,  stderr=subprocess.PIPE)
        self._ReadStdOutErr()

    def _ReadStdOutErr(self):
        for line in self.proc.stdout:
            print( "Line: ", line.rstrip() )
            self.stdoutput.append( line.rstrip() )

        #self.stdoutput  = [line.rstrip() for line in self.proc.stdout]
        self.stderr     = [line.rstrip() for line in self.proc.stderr]

    def GetStdOut(self):
        txt=""
        #print(self.stdoutput)
        #print(txt)
        #txt.join( self.stdoutput )
        for ll in self.stdoutput:
            txt = txt + str(ll)
        return txt

    def GetStdErr(self):
        return "\n".join( self.stderr )

    def ShowCommand(self):
        args = [ self.exename ]
        args.extend( self.args )
        print ( '|'.join( args ) )

#--------------------------------------------------------------------------------
oProg = ExeWrapper( "C:/tmp/GetVersionInfo.exe" );

oProg.AddArg( "-?" )
#oProg.AddArg( "hierist derpfadzur.exe" )
oProg.ShowCommand()
oProg.Run()
print( oProg.GetStdOut() )