import matplotlib.pyplot as plt
from matplotlib import rcParams


name_list_en = ['Computer Science', 'Physics', 'Mathematics'    ,
                'Statistics'    , 'Quantitative Biology', 'Quantitative Finance']

num_list = [8594, 6013, 5618, 5206, 587, 249]
colors = ['green', 'yellow', 'blue', 'red']


# 设置字体类型新罗马体
config = {
    "font.family": 'Times New Roman',
    # "font.size": 80,
    #     "mathtext.fontset":'stix',
}
rcParams.update(config)

# 设置标题
# plt.title('Statistics of tags in coal mine datasets')

# 控制x轴和y轴的范围
# plt.xlim(10, 20)
# plt.ylim(10, 20)


# 决定分割部分，及其与其它部分之间的间距
expl = [0, 0, 0.1, 0, 0, 0]
patches, l_text, p_text = plt.pie(x=num_list, labels=name_list_en, rotatelabels=0, pctdistance=0.7,
                                  autopct='%3.1f %%', colors=colors, shadow=False)

# 设置饼图内外字体大小
for t in p_text:
    t.set_size(10)
for t in l_text:
    t.set_size(9.8)

plt.show()

# 保存
# plt.savefig('./public.pdf')