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Pandas DataFrame idxmax() 方法

❮ DataFrame 参考


示例

返回销售额最高的行的索引,以及年龄最高的行的索引

import pandas as pd

data = {
  "sales": [23, 34, 56],
  "age": [50, 40, 30]
}

df = pd.DataFrame(data)

print(df.idxmax())
亲自尝试 »

定义和用法

idxmax() 方法返回一个 Series,其中包含每列最大值的索引。

通过指定列轴 (axis='columns'),该 idxmax() 方法返回一个 Series,其中包含每行最大值的索引。


语法

dataframe.idxmax(axis, skipna)

参数

这些参数是 关键字参数

参数 描述
axis 0
1
'index'
'columns'
可选,要检查的轴,默认为 0。
skipna True
False
可选,默认为 True。指定是否跳过 NULL 值。

返回值

一个包含具有最高值的行/列的索引的 Series


❮ DataFrame 参考

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