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Pandas DataFrame xs() 方法

❮ DataFrame 参考


示例

返回汽车为福特的相关数据

import pandas as pd

data = {
  'weight': [929, 1109, 1112, 1119, 1328, 1584, 1415, 1235],
  'co2': [95, 90, 99, 104, 105, 94, 99, 104],
  'model': ['Citigo', 'Fabia', 'Fiesta', 'Rapid', 'Focus', 'Mondeo', 'Octavia', 'B-Max'],
  'car': ['Skoda', 'Skoda', 'Ford', 'Skoda', 'Ford', 'Ford', 'Skoda', 'Ford']
}

df = pd.DataFrame(data)
df = df.set_index(['car', 'model'])

print(df.xs('Ford'))
自己尝试一下 »

定义和用法

The xs() 方法返回 DataFrame 的指定部分。


语法

dataframe.xs(key, axis, level, drop_level)

参数

一些参数是 关键字参数

参数 描述
key    必填。要返回的行标签。使用标签元组返回多个标签

axis 数字/索引 可选。默认为 0。要返回的轴
level 标签/位置 可选。默认为 1。要返回的级别
drop_level True|False 可选。默认为 True。指定是否返回与其自身相同级别的对象

返回值

包含所选结果的 DataFrame,如果结果仅包含一行,则为 Series


❮ DataFrame 参考

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