Python Pandas - 指出重複的索引值
要指出重複的索引值,請使用 index.duplicated() 方法。
首先,匯入所需的庫 −
import pandas as pd
建立帶有一些重複項的索引 −
index = pd.Index(['Car','Bike','Airplane','Ship','Airplane'])
顯示索引 −
print("Pandas Index with duplicates...\n",index)
將重複的索引值指示為 True,其餘為 False。預設情況下,它將重複值的第一次出現保持為未標記狀態 −
print("\nIndicating duplicate values...\n", index.duplicated())
示例
以下是程式碼 −
import pandas as pd # Creating the index with some duplicates index = pd.Index(['Car','Bike','Airplane','Ship','Airplane']) # Display the index print("Pandas Index with duplicates...\n",index) # Return the dtype of the data print("\nThe dtype object...\n",index.dtype) # get the dimensions of the data print("\nGet the dimensions...\n",index.ndim) # Indicate duplicate index values as True, rest False # By default it keeps the first occurrence of the duplicate value unmarked print("\nIndicating duplicate values...\n", index.duplicated())
輸出
這將生成以下程式碼 −
Pandas Index with duplicates... Index(['Car', 'Bike', 'Airplane', 'Ship', 'Airplane'], dtype='object') The dtype object... object Get the dimensions... 1 Indicating duplicate values... [False False False False True]
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