假设:有一个数据帧:
country Edition sports Athletes Medal Event_gender
Germany 1990 Aquatics HAJOS, Alfred gold X
Germany 1990 Aquatics HIRSCHMANN, Otto silver X
Germany 1990 Aquatics DRIVAS, Dimitrios silver M
US 2008 Athletics MALOKINIS, Ioannis gold M
US 2008 Athletics HAJOS, Alfred silver W
US 2009 Athletics CHASAPIS, Spiridon gold X
France 2010 Athletics CHOROPHAS, Efstathios gold X
France 2010 Athletics CHOROPHAS, Efstathios gold M
France 2010 golf HAJOS, Alfred silver M
France 2011 golf ANDREOU, Joannis silver W
Spain 2011 golf BURKE, Thomas gold W
我想知道有多少国家获得过项目性别等于“X”的金牌
所以我想解决它,但我被卡住了。我做到了:
df[df['Medal']== 'gold']['country'].nunique()
现在我知道了获得金牌的国家的数目,但我正在努力增加
df[df['Event_gender']== 'X']
根据上述逻辑得出最终结果。有人能帮我吗
IIUC,是的
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