Python Pandas - 傳回用於對索引進行排序的整數索引


如欲返回用於對索引進行排序的整數索引,請在 Pandas 中使用 index.argsort() 方法。首先,匯入所需的函式庫 −

import pandas as pd

建立 Pandas 索引 −

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

顯示 Pandas 索引 −

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

傳回用於對索引進行排序的整數索引 −

res = index.argsort()

範例

以下為程式碼 −

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])

輸出

這將產生以下輸出 −

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')

更新於:2021 年 10 月 14 日

119 次瀏覽

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