Python dataFrame 取指定某一行数据

1、按照索引取值
  

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data=pd.DataFrame({     "company":["A","A","A","A","A","A","A","A","A","A","A","A"],     "salary":[10,12,13,36,12,10,12,13,36,12,36,12],     "age":[3,1,1,1,1,2,2,1,3,1,11,4] } ) row = data.loc[[0],:]

　　

2、找某一列最大值最在行
   

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1	idx = data['age'].argmax()

3、求两列差，并新增一列

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1 2	data["x1"]=data[["salary","age"]].apply(lambda x:x["salary"]+x["age"],axis=1) print(data)