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')
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