CODE EXAMPLE FOR PYTHON

multiple plot in one graph

x=data_price['month']
y = data_price['price_off_peak_var']
y1 = data_price['price_peak_var']
y2 = data_price['price_mid_peak_var']

fig, ax = plt.subplots()
ax.plot(x, y)
ax.plot(x, y1)
plt.show()