Python Pandas - 返回一個新的 Index,其中包含 index 中不在其他索引中的元素,並計算差異
若要返回一個新的 Index,其中包含 index 中不在其他索引中的元素,並計算差異,請在 Pandas 中使用 index1.difference(index2) 方法。
首先,匯入需要的庫 −
import pandas as pd
建立兩個 Pandas 索引 −
index1 = pd.Index([10, 20, 30, 40, 50]) index2 = pd.Index([80, 40, 60, 20, 55])
顯示 Pandas 索引index1 和 index2
print("Pandas Index1...\n",index1)
print("Pandas Index2...\n",index2)獲取兩個索引的差異 −
res = index1.difference(index2)
示例
程式碼如下 −
import pandas as pd
# Creating two Pandas index
index1 = pd.Index([10, 20, 30, 40, 50])
index2 = pd.Index([80, 40, 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)
# Get the difference of both the indexes
res = index1.difference(index2)
# Difference of both the indexes i.e. return a new Index with elements of index not in other
print("\nDifference...\n",res)輸出
這將產生以下輸出 −
Pandas Index1... Int64Index([10, 20, 30, 40, 50], dtype='int64') Pandas Index2... Int64Index([80, 40, 60, 20, 55], dtype='int64') Number of elements in index1... 5 Number of elements in index2... 5 Difference... Int64Index([10, 30, 50], dtype='int64')
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