Python Pandas - 为已创建的索引对象设置索引名称


要为已创建的索引对象设置索引名称,请在 Pandas 中使用 index.set_names() 方法。首先,导入所需的库 -

import pandas as pd

创建 Pandas 索引 -

index = pd.Index(["Electronics", "Mobile Phones", "Accessories", "Home Decor", "Books"])

显示 Pandas 索引 -

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

设置索引名称 -

print("\nSet the index name...\n",index.set_names('Products'))

示例

以下是代码 -

import pandas as pd

# Creating Pandas index
index = pd.Index(["Electronics", "Mobile Phones", "Accessories", "Home Decor", "Books"])

# 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)

# set the name of index
print("\nSet the index name...\n",index.set_names('Products'))

输出

这将产生以下输出 -

Pandas Index...
Index(['Electronics', 'Mobile Phones', 'Accessories', 'Home Decor', 'Books'], dtype='object')

Number of elements in the index...
5

The dtype object...
object

Set the index name...
Index(['Electronics', 'Mobile Phones', 'Accessories', 'Home Decor', 'Books'], dtype='object', name='Products')

更新于: 13-Oct-2021

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