Python Pandas - 返回一个新索引,其索引元素不在其他中,但对结果取消排序
要返回索引元素不在other中但对结果取消排序的新索引,请使用该difference()方法。将sort参数设置为False。
首先,导入所需的库-
import pandas as pd
创建两个Pandas索引-
index1 = pd.Index([30, 10, 20, 50, 40]) index2 = pd.Index([80, 40, 60, 20, 55])
显示Pandasindex1和index2-
print("Pandas Index1...\n",index1) print("Pandas Index2...\n",index2)
获取两个索引的差异。使用值为“False”的“sort”参数对结果进行未排序-
res = index1.difference(index2, sort=False)
示例
以下是代码-
import pandas as pd #创建两个Pandas索引 index1 = pd.Index([30, 10, 20, 50, 40]) index2 = pd.Index([80, 40, 60, 20, 55]) #显示Pandasindex1和index2 print("Pandas Index1...\n",index1) print("Pandas Index2...\n",index2) #返回Index1和Index2中元素的数量 print("\nNumber of elements in index1...\n",index1.size) print("\nNumber of elements in index2...\n",index2.size) #获取两个索引的差值 # Results are unsorted using the "sort" 带值的参数 "False" res = index1.difference(index2, sort=False) #两个索引的差异,即返回一个新索引,其中索引的元素不在其他索引中 print("\nDifference...\n",res)输出结果
这将产生以下输出-
Pandas Index1... Int64Index([30, 10, 20, 50, 40], dtype='int64') Pandas Index2... Int64Index([80, 40, 60, 20, 55], dtype='int64') Number of elements in index1... 5 Number of elements in index2... 5 Difference... Int64Index([30, 10, 50], dtype='int64')