或者您可以
isin直接 使用
x['New Column']='Not Europe'x.loc[x.Country.isin(europe),'New Column']='Europe'Out[612]: Name Country Income New Column0 Steve USA 40000 Not Europe1 Matt UK 40000 Europe2 John USA 40000 Not Europe3 Martin France 40000 Europe

或者您可以
isin直接 使用
x['New Column']='Not Europe'x.loc[x.Country.isin(europe),'New Column']='Europe'Out[612]: Name Country Income New Column0 Steve USA 40000 Not Europe1 Matt UK 40000 Europe2 John USA 40000 Not Europe3 Martin France 40000 Europe