pandas implementation of descending order by a column

ascending order

import pandas as pd
import numpy as np

data = (low=2,high=10,size=(5,3))
data2 = (low=2,high=10,size=(5,3))

df1 = (data,columns=["a","b","c"],index=range(5))  
df2 = (data2,columns=["a","b","c"],index=range(5))

df1 = df1.sort_values(by=['a','b'])
print(df1)

Run results:

在这里插入图片描述

descending order

import pandas as pd
import numpy as np

data = (low=2,high=10,size=(5,3))
data2 = (low=2,high=10,size=(5,3))

df1 = (data,columns=["a","b","c"],index=range(5))  
df2 = (data2,columns=["a","b","c"],index=range(5))

df1 = df1.sort_values(by=['a','b'], ascending=[False, False])
print(df1)

Run results:

在这里插入图片描述

PS: Descending order by a, then by b

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