pandas排序 按索引和值排序

import pandas as pd
import numpy as np

unsorted_df=pd.DataFrame(np.random.randn(10,2),index=[1,4,6,2,3,5,9,8,0,7],columns=['col2','col1'])
print (unsorted_df)

# 按标签排序
sorted_df = unsorted_df.sort_index(ascending=False)  # 降序
print (sorted_df)
sorted_df = unsorted_df.sort_index(ascending=True)   # 升序
print (sorted_df)

# 按值排序
sorted_df = unsorted_df.sort_values(by=['col1','col2'])
print(sorted_df)