Python Pandas - 传回用于对索引进行排序的整数索引


如欲返回用于对索引进行排序的整数索引,请在 Pandas 中使用 index.argsort() 方法。首先,导入所需的函数库 −

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)

传回用于对索引进行排序的整数索引 −

res = index.argsort()

范例

以下为代码 −

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)

res = index.argsort()

# Return the integer indices that would sort the index
print("\nThe integer indices to sort the index...\n",res)

print("\nOrdered..\n",index[res])

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

The integer indices to sort the index...
[1 3 2 0 4]

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

更新于:2021 年 10 月 14 日

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