Python script that calls jamfHelper binary

[kennethdean2010]

Hi I have a python script I am using to update my Macbooks at work that calls the jamfBinary to display a hud that allows the user to defer updates.

At this time it only presents the hud once with 5 options,

• "Start Now",
  
• "5 minutes",
  
• "2 hours",
  
• "4 hours",
  
• "8 hours".
  

If the user chooses "5 minutes" then the install starts in five minutes.

What I want is it to display the prompt again minus the options that preceded it.
So if the input is 5 mins, then in roughly five minutes the hud reappears with

• "Start Now",
  
• "2 hours",
  
• "4 hours",
  
• "8 hours".
  

If the hud comes up and user decides I will do it in "4 hours" then I want the prompt to reappear with only the 8 hour option.

I want them to be able to defer multiple times until the max deferral time period has been reached.
I have attached the script.
I was thinking I could just re-use this section of code however many times I need it to prompt but I am not sure if I am thinking about this correctly as I am not a Python Pro but I have some experience programming in C++.
My apologies. Any guidance is much appreciated.

***This is the code I believe I can reuse to accomplish the hud being prompted, I am just not sure if I am logically approaching this the right way.

def display_prompt():
    """Displays prompt to allow user to schedule update installation

    Args:
        None

    Returns:
        (int) defer_seconds: Number of seconds user wishes to defer policy
        OR
        None if an error occurs
    """
    cmd = [JAMFHELPER,
           '-windowType', 'hud',
           '-title', GUI_WINDOW_TITLE,
           '-heading', GUI_HEADING,
           '-icon', GUI_ICON,
           '-description', GUI_MESSAGE,
           '-button1', GUI_BUTTON,
           '-showDelayOptions',
           ' '.join(GUI_DEFER_OPTIONS),
           '-lockHUD']
    error_values = ['2', '3', '239', '243', '250', '255']
    # Instead of returning an error code to stderr, jamfHelper always returns 0
    # and possibly returns an 'error value' to stdout. This makes it somewhat
    # spotty to check for some deferrment values including 0 for 'Start Now'.
    # The return value is an integer, so leading zeroes are dropped. Selecting
    # 'Start Now' should technically return '01'; instead, only '1' is returned
    # which matches the 'error value' for 'The Jamf Helper was unable to launch'
    # All we can do is make sure the subprocess doesn't raise an error, then
    # assume (yikes!) a return value of '1' equates to 'Start Now'
    try:
        proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
                                stderr=subprocess.PIPE)
        out, err = proc.communicate()
        # Check that the return value does not represent an 'error value'
        if not out in error_values:
            # Special case for 'Start Now' which returns '1'
            if out == '1':
                return 0
            else:
                return int(out[:-1])
        else:
            return None
    except:
        # Catch possible CalledProcessError and OSError
        print "An error occurred when displaying the user prompt."
        return None