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Pandas DataFrame replace() 方法

❮ DataFrame 参考


示例

将整个 DataFrame 中的值 50 替换为 60

import pandas as pd

data = {
  "name": ["Bill", "Bob", "Betty"],
  "age": [50, 50, 30],
  "qualified": [True, False, False]
}
df = pd.DataFrame(data)

newdf = df.replace(50, 60)
自己试试 »

定义和用法

replace() 方法用另一个指定值替换指定值。

replace() 方法搜索整个 DataFrame 并替换所有指定值的实例。


语法

dataframe.replace(to_replace, value, inplace, limit, regex, method)

参数

inplacelimitregexmethod 参数是关键字参数

参数 描述
to_replace   必需,字符串、列表、字典、Series、数字或描述要搜索内容的正则表达式
value   可选,字符串、数字、字典、列表或指定要替换值的正则表达式。
inplace True
False
可选,默认为 False。如果为 True:则在当前 DataFrame 上进行替换。如果为 False:则返回一个已进行替换的副本。
limit 数字
None
可选,默认为 None。指定要填充的最大间隙大小限制
regex True
False
None
可选,默认为 False。指定是否使用正则表达式进行替换。
method 'bfill'
'ffill'
'pad'
None
可选,如果value 参数不存在,则指定如何替换。

返回值

包含结果的DataFrame,如果 inplace 参数设置为 True,则返回 None。


❮ DataFrame 参考

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