import matplotlib.pyplot as plt import matplotlib as mpl import numpy as np mpl.rcParams["font.sans-serif"] = ["SimHei"] mpl.rcParams["axes.unicode_minus"] = False x = np.arange(5) y = [6, 10, 4, 5, 1] y1 = [2, 6, 3, 8, 5] bar_width = 0.35 tick_label = ["A", "B", "C", "D", "E"] plt.bar(x, y, bar_width, align="center", color="c", label="班級A", alpha=0.5) plt.bar(x+bar_width, y1, bar_width, color="b", align="center", label="班級", alpha=0.5) plt.xlabel("測試難度") plt.ylabel("試卷份數") plt.xticks(x+bar_width/2, tick_label) plt.legend() plt.show()
