import matplotlib.pyplot as plt data = [49, 20, 37, 28, 20] jours = ["14/02/2016", "15/02/2016", "17/02/22016", "28/05/2016", "15/07/2016"] plt.plot(data) #1 seul argument: 'data' plt.xticks(range(len(data)), jours, rotation=45) plt.show()