pandas按某列降序的实现
桂花很香,旭很美 人气:0升序
import pandas as pd import numpy as np data = np.random.randint(low=2,high=10,size=(5,3)) data2 = np.random.randint(low=2,high=10,size=(5,3)) df1 = pd.DataFrame(data,columns=["a","b","c"],index=range(5)) df2 = pd.DataFrame(data2,columns=["a","b","c"],index=range(5)) df1 = df1.sort_values(by=['a','b']) print(df1)
运行结果:
降序
import pandas as pd import numpy as np data = np.random.randint(low=2,high=10,size=(5,3)) data2 = np.random.randint(low=2,high=10,size=(5,3)) df1 = pd.DataFrame(data,columns=["a","b","c"],index=range(5)) df2 = pd.DataFrame(data2,columns=["a","b","c"],index=range(5)) df1 = df1.sort_values(by=['a','b'], ascending=[False, False]) print(df1)
运行结果:
PS: 先按a降序,再按b降序
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