使用,我们可以轻松地用 CSV 文件的索引号重命名列名。columns.values()
假设以下是我们在 Microsoft Excel 中打开的 CSV 文件的内容 -
我们将重命名列名。首先,将 CSV 文件中的数据加载到 Pandas DataFrame 中 -
dataFrame = pd.read_csv("C:\\Users\\amit_\\Desktop\\SalesData.csv")
显示 CSV 中的所有列名 -
dataFrame.columns
现在,重命名列名 -
dataFrame.columns.values[0] = "Car Names" dataFrame.columns.values[1] = "Registration Cost" dataFrame.columns.values[2] = "Units Sold"
以下是代码 -
import pandas as pd # Load data from a CSV file into a Pandas DataFrame: dataFrame = pd.read_csv("C:\\Users\\amit_\\Desktop\\SalesData.csv") print("Reading the CSV file...\n",dataFrame) # displaying column names res = dataFrame.columns # displaying another subset print("\nDisplaying column names : \n",res) # rename column names from the CSV file dataFrame.columns.values[0] = "Car Names" dataFrame.columns.values[1] = "Registration Cost" dataFrame.columns.values[2] = "Units Sold" print("\nDisplaying updated column names : \n",res)输出结果
这将产生以下输出 -
Reading the CSV file... Car Reg_Price Units 0 BMW 2500 100 1 Lexus 3500 80 2 Audi 2500 120 3 Jaguar 2000 70 4 Mustang 2500 110 Displaying column names : Index(['Car','Reg_Price','Units'], dtype='object') Displaying updated column names : Index(['Car Names','Registration Cost','Units Sold'], dtype='object')