python给一行数据绘制饼图

参考链接：
https://www.runoob.com/matplotlib/matplotlib-pie.html

km_model.labels_
Out[8]: array([2, 2, 0, ..., 0, 2, 0])
a1 = a.value_counts()
a1
Out[11]: 
2    813
0    437
1    284
3     74
dtype: int64
a1.plot(kind='pie')
Out[14]: 

plt.pie(a1,
        colors=["#d5695d", "#5d8ca8", "#65a479", "#a564c9"],
       )
plt.title("cluster labels")
plt.show()

plt.pie(a1,
        colors=["#d5695d", "#5d8ca8", "#65a479", "#a564c9"],
        autopct='%.2f%%'
       )
plt.title("cluster labels")
plt.show()