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')
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