使用子进程库：错误：无法识别的参数

Question

所以基本上我有15个左右的脚本，可以使用SSH库连接到各种网络设备。我想创建一个可以运行其他python脚本的顶层python文件，这样用户就可以决定要运行哪些脚本。有人建议我使用子进程库，这似乎对我想做的事情最有意义。请注意，我的python脚本包含命令行argparse参数，以便它运行，例如：

python San_cable_test.py -deviceIP 172.1.1.1 -deviceUsername myUsername -devicePassword myPassword

到目前为止，我已经创建了一个顶层python文件，该文件被设置为调用两个python脚本，用户可以从中输入两个python脚本。但是，当我运行程序并选择其中一个选项并获取用户参数时，我得到一个

^{pr2}$

我尝试了两种不同的方法，我将展示回溯：

usage: San_cable_test.py [-h] [-deviceIP DEVICEIP]
The name of this script is: San_cable_test.py
                         [-deviceUsername DEVICEUSERNAME]
                         [-devicePassword DEVICEPASSWORD]
San_cable_test.py: error: unrecognized arguments: 172.1.1.1 myUsername myPassword

以及

usage: San_cable_test.py [-h] [-deviceIP DEVICEIP]
                         [-deviceUsername DEVICEUSERNAME]
The name of this script is: San_cable_test.py
                         [-devicePassword DEVICEPASSWORD]
San_cable_test.py: error: unrecognized arguments: -deviceIP 172.1.1.1 -deviceUsername myUsername -devicePassword myPassword

这是我第一次使用subprocesses库，我不知道我是否正确地调用了这些脚本。问题是这些脚本是使用argparse在命令行中运行的，所以这就是问题所在。不幸的是，我之所以使用2.7.16版本，是因为这个奇怪的公司问题，我一直试图让我的经理们知道2.7很快将不受支持，但这与现在无关。这是我代码的重要部分。我真的很感谢你的帮助！在

def runMain():

    scriptName = os.path.basename(__file__)

    print("The name of this script: " + scriptName + "\n")

    scriptPurpose = 'This script is the top-level module that can invoke any script the user desires !\n'

    while True:
        optionPrinter()

        user_input = input("Please select an option for which your heart desires...\n")

        switch_result = mySwitch(user_input)

        if switch_result == "our_Switch":
            deviceIP = raw_input("Enter the IP address for the device")
            deviceUsername = raw_input("Enter the username for the device")
            devicePassword = raw_input("Enter the password for the device")

            subprocess.call(['python', 'our_Switch.py', deviceIP, deviceUsername, devicePassword])

        elif switch_result == "San_cable_test":
            deviceIP = raw_input("Enter the IP address for the device")
            deviceUsername = raw_input("Enter the username for the device")
            devicePassword = raw_input("Enter the password for the device")
            subprocess.call(['python', 'San_cable_test.py', deviceIP, deviceUsername, devicePassword])

        else:
            print("Exiting the program now, have a great day !\n")
            sys.exit(-1)

if __name__ == '__main__':

下面是在其中一个脚本中使用argparse的示例

def runMain():

    scriptName = os.path.basename(__file__)

    print("The name of this script is: " + scriptName)

    scriptPurpose = 'This script enables and disables the SAN switches'

    parser = argparse.ArgumentParser(description=scriptPurpose, formatter_class=RawTextHelpFormatter)
    parser.add_argument("-deviceIP", help="Target device IP address", type=str)
    parser.add_argument("-deviceUsername", help="Target device username", type=str)
    parser.add_argument("-devicePassword", help="Target device password", type=str)
    args = parser.parse_args()

    if args.deviceIP is None:
        print("The device IP parameter is blank\n")
    else:
        deviceIP = args.deviceIP

    if args.deviceUsername is None:
        print("The device userName parameter is blank\n")
    else:
        deviceUsername = args.deviceUsername

    if args.devicePassword is None:
        print("The device password parameter is blank\n")
    else:
        devicePassword = args.devicePassword

    print("**********************\n")
    print (deviceIP + " " + deviceUsername + " " + devicePassword)
    print("**********************\n")

    print("This script allows the user to enable and disable ports on a SAN switch to see how it behaves\n")

    print("Checking to see if the SAN switch is pingable\n")

    test_ping = canPing(deviceIP)

    if test_ping:
        print("The switch is pingable, let's proceed !\n")
    else:
        print("This device is not pingable unfortunately, sorry... : (\n")
        sys.exit(-1)

    sshConnection = connectToSSH(deviceIP, deviceUsername, devicePassword)

    while True:
        optionPrinter()

        user_input = input("Select an option from the menu\n")

        switch_result = mySwitch_function(user_input)

        if switch_result == 'ShowPort':
            portShow(sshConnection)
        elif switch_result == 'SwitchShow':
            switchShow(sshConnection)
        elif switch_result == 'EnablePort':
            enablePort(sshConnection)
        elif switch_result == 'DisablePort':
            disablePort(sshConnection)
        elif switch_result == 'disableEnable':
            disableEnableIteration(sshConnection)
        else:
            print("Program is exiting now, have a great day/night ! \n")
            sys.exit(-1)

Answer 1

参数前面缺少选项名。在

subprocess.call(['python', 'our_Switch.py', '-deviceIP', deviceIP, '-deviceUsername', deviceUsername, '-devicePassword', devicePassword])

但是，如果您将这些其他脚本更改为Python模块，您可以简单地将它们作为函数导入和调用，而不是将它们作为子进程运行，这样可能会更干净。在