Python Pandas - 指示除最后一次出现之外的重复索引值

要指示除最后一次出现之外的重复索引值，请使用.使用值为last的keep参数。index.duplicated()

首先，导入所需的库-

import pandas as pd

创建具有一些重复项的索引-

index = pd.Index([Car,Bike,Airplane,Ship,Airplane])

显示索引-

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

将重复的索引值指示为True，但最后一次出现除外。将“keep”参数设置为“last”-

print("\nIndicating duplicate values except the last occurrence...\n", index.duplicated(keep=last))

示例

以下是代码-

import pandas as pd #Creatingtheindexwithsomeduplicates index = pd.Index([Car,Bike,Airplane,Ship,Airplane]) #Displaytheindex print("Pandas Index with duplicates...\n",index) #Returnthedtypeofthedata print("\nThe dtype object...\n",index.dtype) #getthedimensionsofthedata print("\nGet the dimensions...\n",index.ndim) #IndicateduplicateindexvaluesasTrue,exceptthelastoccurrence # Set the "keep" 参数为 "last" print("\nIndicating duplicate values except the last occurrence...\n", index.duplicated(keep=last))输出结果

这将产生以下代码-

Pandas Index with duplicates... Index([Car, Bike, Airplane, Ship, Airplane], dtype=object) The dtype object... object Get the dimensions... 1 Indicating duplicate values except the last occurrence... [False False True False False]