Python Pandas - 在条件为 False 的情况下替换索引值


若要在条件为 False 的情况下替换索引值,请使用 Pandas 中的 index.isin() 方法。首先,导入所需的库 -

import pandas as pd

创建 Pandas 索引 -

index = pd.Index(['Electronics','Accessories','Decor', 'Books', 'Toys'], name ='Products')

显示 Pandas 索引 -

print("Pandas Index...\n",index)

替换条件为 False 的值。在此处,除了 'Decor' 之外,所有其他元素都得到了替换 -

print("\nReplace index vales where condition is False...\n",index.where(index.isin(['Decor']), 'Miscellaneous'))

示例

以下是代码 -

import pandas as pd

# Creating Pandas index
index = pd.Index(['Electronics','Accessories','Decor', 'Books', 'Toys'], name ='Products')

# Display the Pandas index
print("Pandas Index...\n",index)

# Return the number of elements in the Index
print("\nNumber of elements in the index...\n",index.size)

# Return the dtype of the data
print("\nThe dtype object...\n",index.dtype)

# replace values where condition is False
# Here, except the 'Decor', every other element gets replaced
print("\nReplace index vales where condition is False...\n",index.where(index.isin(['Decor']), 'Miscellaneous'))

输出

这将产生以下输出 -

Pandas Index...
Index(['Electronics', 'Accessories', 'Decor', 'Books', 'Toys'], dtype='object', name='Products')

Number of elements in the index...
5

The dtype object...
object

Replace index vales where condition is False...
Index(['Miscellaneous', 'Miscellaneous', 'Decor', 'Miscellaneous','Miscellaneous'],dtype='object', name='Products')

更新于: 2021 年 10 月 13 日

210 次浏览

开启你的 职业生涯

通过完成该课程获得认证

开始
广告