Python Pandas - 计算两个 Index 对象的对称差


在 Pandas 中使用 index1.symmetric_difference(index2) 方法计算两个 Index 对象的对称差。

首先,导入必要的库 −

import pandas as pd

创建两个 Pandas 索引 −

index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index([40, 10, 60, 20, 55])

显示 Pandas index1 和 index2 −

print("Pandas Index1...\n",index1)
print("Pandas Index2...\n",index2)

执行对称差 −

res = index1.symmetric_difference(index2)

示例

以下是代码 −

import pandas as pd

# Creating two Pandas index
index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index([40, 10, 60, 20, 55])

# Display the Pandas index1 and index2
print("Pandas Index1...\n",index1)
print("Pandas Index2...\n",index2)

# Return the number of elements in Index1 and Index2
print("\nNumber of elements in index1...\n",index1.size)
print("\nNumber of elements in index2...\n",index2.size)

# Perform symmetric difference
res = index1.symmetric_difference(index2)

# Symmetric difference of both the indexes
print("\nThe index1 and index2 symmetric difference...\n",res)

输出

将生成以下输出 −

Pandas Index1...
Int64Index([10, 20, 30, 40, 50], dtype='int64')
Pandas Index2...
Int64Index([40, 10, 60, 20, 55], dtype='int64')

Number of elements in index1...
5

Number of elements in index2...
5

The index1 and index2 symmetric difference...
Int64Index([30, 50, 55, 60], dtype='int64')

更新于: 2021-10-14

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