Python Pandas - 创建两个 Index 对象的并集


要制作两个 Index 对象的并集,在 Pandas 中使用 index1.union(index2) 方法。首先,导入所需的库 −

import pandas as pd

创建两个 Pandas 索引 −

index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index([80, 65, 60, 70, 55])

显示 Pandas index1 和 index2 −

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

执行并集 −

res = index1.union(index2)

示例

以下为代码 −

import pandas as pd

# Creating two Pandas index
index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index([80, 65, 60, 70, 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 union
res = index1.union(index2)

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

输出

将产生以下输出 −

Pandas Index1...
Int64Index([10, 20, 30, 40, 50], dtype='int64')
Pandas Index2...
Int64Index([80, 65, 60, 70, 55], dtype='int64')

Number of elements in index1...
5

Number of elements in index2...
5

The index1 and index2 Union...
Int64Index([10, 20, 30, 40, 50, 55, 60, 65, 70, 80], dtype='int64')

更新于: 2021-10-14

108 次浏览

开启您的职业

完成课程获得认证

开始
广告
© . All rights reserved.