饼图示例

效果图

"""
Created on Mon Oct 18 15:34:53 2021
@author: luoha
"""


import pandas as pd
import matplotlib.pyplot as plt
import numpy as np


import pandas as pd
import matplotlib.pyplot as plt
users = pd.read_excel('E:\SXFEL\others\绘图\人数分类(1).xlsx') #人数分类(1).xlsx
print(users)
users.sort_values(by="number",inplace=True,ascending=False) 
# #表示pd按照A这个字段排序，inplace默认为False,如果该值为True，那么就会在当前的dataframe上操作。
# #ascending 默认等于True，按从小到大排列，改为False 按从大到小排。
print(users)
df = users
# print(df.head(0))
labels = [] #df['people']+'(' + str(df['num'])

allpeople = sum(df['number'])

for i , k in zip(df['people'],df['number']):
    j = i + "(" + str('{:.2%}'.format(k/allpeople)) + ")"
    labels.append(j)


sizes = df['number']
rangestart = 2
colors = [plt.cm.Spectral(i/float(len(labels))) for i in range(rangestart,rangestart+len(labels))]
# sizes.sort(reverse=True)
# my_dpi=96
# plt.figure(figsize=(480/my_dpi,480/my_dpi),dpi=my_dpi)
x=0; y=0
width = 2; height = 1
fig, ax = plt.subplots(1, figsize=(15, 15 * height / width))
ax.set_xlim(x, width)
ax.set_ylim(y, height)
patches, texts = plt.pie(x=sizes,labels=labels,colors=colors,startangle=0,rotatelabels=False, wedgeprops={'edgecolor':'w','width':0.7, 'linewidth':2})
# texts[1].set_size('20')

plt.title('YYDS',fontweight='bold',fontsize='18',color='green')
plt.ylabel('YYDS',fontweight='bold',fontsize='16',color='green')

plt.legend(patches, labels,#添加图例
          title="YYDS Pie",
          loc="center left",
          bbox_to_anchor=(0.9, 0.7, 0.5, 0.5),
          ncol=2,#控制图例中按照两列显示，默认为一列显示，
          )

plt.show()
plt.savefig("E:\SXFEL\others\绘图\PieChart7.png")
plt.savefig("E:\SXFEL\others\绘图\PieChart7.svg",format = 'svg')

表格内容