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')
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