x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
threes = [3, 6, 9, 12, 15, 18, 21, 24, 27, 30]
fib = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]
import c3pyo as c3
chart = c3.StepChart()
chart.plot(x, threes, label='threes')
chart.plot(x, fib, label='fibonacci')
chart.show()