计算特定行的平均值

Question

我的代码是：

df=pandas.read_csv("data.csv", names=["Date","Team1","Team2","Map","Event"])
df

输出是：

Date, Team1, Team2, Team1 Score, Team2 Score, Map, Event
17/3/17, Misfits, Cloud9, 16, 4,overpass, Pro League
17/3/17, TyLoo, Misfits, 16, 4, cache, Pro League
17/3/17, Liquid, Misfits, 8, 16, cbble, Proleague
17/3/17, Misfits, Blight, 16, 7, overpass, Proleague
17/3/17, Selfless, Misfits, 12, 16, inferno, Proleague

我的目标是计算球队“Misfits”平均得分，即（16 + 4 + 16 + 16 + 16）/5=13.6

我知道我可以通过df [“Column Name”]。mean（）计算列平均值，但问题是团队“Misfits”出现在“Team1”和“Team2”列中。

Answer 1

df[['Team1 Score', 'Team2 Score']].where(
    df[['Team1', 'Team2']].values == 'Misfits').stack().mean()

13.6