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Pandas DataFrame append() 方法

❮ DataFrame 参考


示例

在另一个 DataFrame 的末尾追加一个 DataFrame

import pandas as pd

data1 = {
  "age": [16, 14, 10],
  "qualified": [True, True, True]
}
df1 = pd.DataFrame(data1)

data2 = {
  "age": [55, 40],
  "qualified": [True, False]
}
df2 = pd.DataFrame(data2)

newdf = df1.append(df2)
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定义和用法

The append() 方法将 DataFrame 类对象追加到当前 DataFrame 的末尾。

The append() 方法返回一个新的 DataFrame 对象,原始 DataFrame 不会发生任何更改。


语法

dataframe.append(other, ignore_index, verify_integrity, sort)

参数

The ignore_index, verify_integrity, sort 参数是 关键字参数

参数 描述
other DataFrame
Series
字典
列表
必需。指定要追加的对象
ignore_index True
False
可选,默认为 False。如果为 True,则忽略原始索引,并将其替换为 0、1、2 等
verify_itegrity True
False
可选,默认为 False。如果为 True,则如果存在两个或多个具有相同索引的行,则会报错
sort True
False
可选,默认为 False。如果为 True,则对列进行排序

返回值

一个新的 DataFrame,其中包含已追加的新 DataFrame/Series。

此方法不会更改原始 DataFrame。


❮ DataFrame 参考

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