Python Pandas - 通过具有不同数据类型的两个 Index 对象形成 union


若要通过具有不同数据类型的两个 Index 对象形成 Union,请在 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(['p','q', 'r', 's', 't','u'])

显示 Pandas index1 和 index2 −

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

执行不匹配数据类型的并集 −

res = index1.union(index2)

范例

以下是代码 −

import pandas as pd

# Creating two Pandas index
index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index(['p','q', 'r', 's', 't','u'])

# 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 of mismatched datatypes
res = index1.union(index2)

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

输出

这将生成以下输出 −

Pandas Index1...
Int64Index([10, 20, 30, 40, 50], dtype='int64')
Pandas Index2...
Index(['p', 'q', 'r', 's', 't', 'u'], dtype='object')

Number of elements in index1...
5

Number of elements in index2...
6

The index1 and index2 Union...
Index([10, 20, 30, 40, 50, 'p', 'q', 'r', 's', 't', 'u'], dtype='object')

更新于: 2021-10-14

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