import matplotlib.pyplot as plt

数据

month_number = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12] facecream = [2500, 2630, 2140, 3400, 3600, 2760, 2980, 3700, 3540, 1990, 2340, 2900]

绘图

plt.bar(month_number, facecream)

图例

plt.legend(['face cream'], loc='upper left')

图题

plt.title('图三：洗面奶和面霜售卖量对比条形图')

X轴标签

plt.xlabel('Month Number')

Y轴标签

plt.ylabel('Sales Units in Number')

添加网格

plt.grid(True, linestyle='-')

显示图形

plt.show()