Plotting multiple functions with pyplot, passing functions into functions, & reusing code

I want to plot multiple arbitrary math functions while reusing code for getting coordinates and plotting them.

Answer

You have to provide the function itself and not the call to it.

getCoords(myFunction, 42)
getCoords(anotherFunction, 69)

You could restructure to something like this. Having a dedicated function to produce the coordinates and a dedicated function to draw them:

def myFunction(x):
    return (3*(x**2)) + (6*x) + 9


def get_coords(fun, num):
    for n in range(num):
        yield n, fun(n)


def draw_graph(coordinates):
    for x, y in coordinates:
        plt.plot(x, y, marker="o")
    plt.show()


draw_graph(get_coords(myFunction, 45))