import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams["font.sans-serif"] = ["SimHei"]
mpl.rcParams["axes.unicode_minus"] = False
labels = "A难度水平", "B难度水平", "C难度水平", "D难度水平"
students = [0.35, 0.15, 0.20, 0.30]
colors = ["#377eb8", "#4daf4a", "#984ea3", "#ff7f00"]
explode = (0.1, 0.1, 0.1, 0.1)
plt.pie(students, explode=explode, labels=labels, autopct="%3.1f%%",
startangle=45, shadow=True, colors=colors)
plt.title("选择不同难度测试试卷的学生百分比")
# 像饼图中添加表格
colLabels = ["A难度水平", "B难度水平", "C难度水平", "D难度水平"]
rowLabels = ["学生选择试卷人数"]
studentValues = [[350, 150, 200, 300]]
colColors = ["#377eb8", "#4daf4a", "#984ea3", "#ff7f00"]
plt.table(cellText=studentValues,
cellLoc="center",
colWidths=[0.1]*4,
colLabels=colLabels,
colColours=colColors,
rowLabels=rowLabels,
rowLoc="center",
loc="bottom")
plt.show()