使用python中的命令行参数运行C#exe，给出调用的进程错误：command

我正在尝试在Windows 2019中运行此子进程：

random_token = 'abcd'
process = subprocess.check_output(r'"C:\Users\Administrator\Documents\OpenQuant 2014\Solutions\Test_Multi_Vol_7\Backtest\bin\Debug\Backtest.exe" ' + random_token + ' 2020-06-01 2020-06-05')

但我一直得到：

---------------------------------------------------------------------------
CalledProcessError                        Traceback (most recent call last)
<ipython-input-18-570224617f86> in <module>
----> 1 process = subprocess.check_output(r'"C:\Users\Administrator\Documents\OpenQuant 2014\Solutions\Test_Multi_Vol_7\Backtest\bin\Debug\Backtest.exe" ' + random_token + ' 2020-06-01 2020-06-05')
      2 
      3 
      4 #process = subprocess.check_output(['"C:\\Users\\Administrator\\Documents\\OpenQuant 2014\\Solutions\\Test_Multi_Vol_7\\Backtest\\bin\\Debug\\Backtest.exe"', random_token, '2020-06-01', '2020-06-05'])

C:\ProgramData\Anaconda3\lib\subprocess.py in check_output(timeout, *popenargs, **kwargs)
    413         kwargs['input'] = empty
    414 
--> 415     return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
    416                **kwargs).stdout
    417 

C:\ProgramData\Anaconda3\lib\subprocess.py in run(input, capture_output, timeout, check, *popenargs, **kwargs)
    514         retcode = process.poll()
    515         if check and retcode:
--> 516             raise CalledProcessError(retcode, process.args,
    517                                      output=stdout, stderr=stderr)
    518     return CompletedProcess(process.args, retcode, stdout, stderr)

CalledProcessError: Command '"C:\Users\Administrator\Documents\OpenQuant 2014\Solutions\Test_Multi_Vol_7\Backtest\bin\Debug\Backtest.exe" KUODFMHA 2020-06-01 2020-06-05' returned non-zero exit status 3762504530.

它表明命令行参数没有正确传递，导致仅传递1个参数的错误

pipe = subprocess.Popen(r'"C:\Users\Administrator\Documents\OpenQuant 2014\Solutions\Test_Multi_Vol_7\Backtest\bin\Debug\Backtest.exe" ' + random_token + ' 2020-06-01 2020-06-05',stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
stdout, stderr = pipe.communicate()