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Pandas DataFrame filter() 方法

❮ DataFrame 参考


示例

仅返回包含“name”和“age”列的 DataFrame

import pandas as pd

data = {
  "name": ["Sally", "Mary", "John"],
  "age": [50, 40, 30],
  "qualified": [True, False, False]
}
df = pd.DataFrame(data)

newdf = df.filter(items=["name", "age"])
亲自尝试 »

定义和用法

The filter() 方法过滤 DataFrame,并仅返回过滤器中指定的行或列。


语法

dataframe.filter(items, like, regex, axis)

参数

item like regex axis 参数是 关键字参数

参数 描述
items 列表 可选。要保留的行或列的标签或索引列表
like 字符串 可选。指定索引或列标签应包含的内容的字符串。
regex 正则表达式 可选。指定索引或列标签应包含内容的正则表达式。
axis 0
1
'index'
'column'
None
可选,默认为 'column'。要过滤的轴

返回值

具有过滤结果的 DataFrame

此方法不会更改原始 DataFrame。


❮ DataFrame 参考

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