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')
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