Example of using sort_values isin in pandas DataFrame

import pandas as pd df = pd.DataFrame([[1,2,3],[1,3,4],[2,4,3]],index = ['one','two','three'],columns = ['A','B','C']) print df # A B C # one 1 2 3 # two 1 3 4 # three 2 4 3

mask = df['A'].isin([1]) #括号中必须为list print mask # one True # two True # three False # Name: A, dtype: bool print df[mask] # A B C # one 1 2 3 # two 1 3 4

import pandas as pd df = pd.DataFrame([[1,2,3],[2,3,4],[2,4,3],[1,3,7]], index = ['one','two','three','four'],columns = ['A','B','C']) print df # A B C # one 1 2 3 # two 2 3 4 # three 2 4 3 # four 1 3 7 df.sort_values(by=['A','B'],ascending=[0,1],inplace=True) print df # A B C # two 2 3 4 # three 2 4 3 # one 1 2 3 # four 1 3 7