Python Pandas - 对索引值进行排序并返回对索引进行排序的索引
要对索引值进行排序并返回对索引进行排序的索引，请使用.该return_indexer参数被设置为真。index.sort_values()
首先，导入所需的库-
import pandas as pd
创建熊猫索引-
index = pd.Index([50, 10, 70, 95, 110, 90, 30])
显示熊猫指数-
print("Pandas Index...\n",index)排序索引值。默认情况下，按升序排序。使用值为True的“return_indexer”参数返回索引以对索引进行排序-
print("\nSort and also return the indices that would sort the index...\n",index.sort_values(return_indexer=True))示例
以下是代码-
import pandas as pd
#创建Pandas索引
index = pd.Index([50, 10, 70, 95, 110, 90, 30])
#显示Pandas索引
print("Pandas Index...\n",index)
#返回索引中的元素数
print("\nNumber of elements in the index...\n",index.size)
#排序索引值
#默认情况下，按升序排序
# Return the indices to sort the index using the "return_indexer" parameter with value True
print("\nSort and also return the indices that would sort the index...\n",index.sort_values(return_indexer=True))输出结果这将产生以下输出-
Pandas Index... Int64Index([50, 10, 70, 95, 110, 90, 30], dtype='int64') Number of elements in the index... 7 Sort and also return the indices that would sort the index... (Int64Index([10, 30, 50, 70, 90, 95, 110], dtype='int64'), array([1, 6, 0, 2, 5, 3, 4], dtype=int64))
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