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→Program Name and valid command line arguments
Compare the usage output you have now with the one above. There is one option missing, you will need to change the <code>argparse</code> function to implement it.
You will that there is an 'args' object in a2_template.py. Once the <code>parse_command_args()</code> function is called, it will return an args object. The command line arguments will be stored as attributes of that object. <b>Do not use sys.argv to parse arguments.</b>
If there is only one file name provided at the command line, read the login/logout records from the contents of the given file. If the file name is "online", get the record on the system your script is being execute using the Linux command "last -iwF". The format of each line in the file should be the same as the output of 'last -Fiw'. Filter out incomplete login/logout record (hints: check for the number of fields in each record).
