Plot
usage: plot [-p] [-x VARIABLE] [-y VARIABLE] [-h]
plots an x and y variable defined by the user
optional arguments:
-x, --x selects the x variable for the graph (default: None)
-y, --y selects the y variable for the graph (default: None)
-c, --custom selects a predefined graph (default: None)
-p, --put shows the chart for puts instead of calls (default: False)
-h, --help show this help message (default: False)