How to rename column name in pandas By: Rajesh P.S.The Pandas DataFrame rename() method can be used to rename one or more columns at once: # rename the 'Salary' column to 'Income' df = df.rename(columns={'Salary
Renaming columns in a pandas DataFrame is a common task in data manipulation. You can rename columns using therenamemethod. Here’s a basic example to illustrate how you can rename columns: Suppose you have a DataFramedfwith columns['A', 'B', 'C']and you want to rename column'A'to'X...
在这个例子中，我们将列名'A'重命名为'Column1'。示例2：使用函数进行列名重命名import pandas as pddata = {'A': [1, 2, 3],'B': [4, 5, 6]}df = pd.DataFrame(data)print("Original DataFrame:")print(df)df = df.rename(columns=lambda x: x.lower())print("\nRenamed DataFrame:")print...
Columns are the different fields that contain their particular values when we create a DataFrame. We can perform certain operations on both rows & column values. Sometimes we might need torename a particular column name or all the column names. Pandas allows us to achieve this task usingpandas....
import pandas as pd # Sample DataFrame data = {"ID": [1, 2, 3], "Name": ["Alice", "Bob", "Charlie"], "Age": [25, 30, 33]} df = pd.DataFrame(data) # Define a dictionary for column renaming column_mapping = {"ID": "EmployeeID", "Name": "EmployeeName", "Age": "Em...
df.rename(columns={'column_current_name':'new_name'}) Now, let’s see how to rename the column “marks” to ‘percentage‘. Example importpandasaspd student_dict = {"name": ["Joe","Nat","Harry"],"age": [20,21,19],"marks": [85.10,77.80,91.54]}# Create DataFrame from dictstude...
pandasaspd# 创建示例数据data={'group':['A','B','A','B','A'],'value':[1,2,3,4,5]}df=pd.DataFrame(data)# 应用转换操作:计算每个组的累积和transformed=df.groupby('group')['value'].transform('cumsum')df['cumulative_sum']=transformedprint("DataFrame with cumulative sum:")print(df)...
Depending on the values in the dictionary, we may use this method to rename a single column or many columns. Example Code: importpandasaspd d1={"Names":["Harry","Petter","Daniel","Ron"],"ID":[1,2,3,4]}df=pd.DataFrame(d1)display(df)# rename columnsdf1=df.rename(columns={"Name...
# 步骤1:导入pandas库importpandasaspd# 导入pandas库# 步骤2:创建数据集data={'A':[1,2,3],'B':[4,5,6],'C':[7,8,9]}df=pd.DataFrame(data)# 创建DataFrame# 步骤3:定义新的列名new_columns=['Column1','Column2','Column3']# 新列名# 步骤4:重命名列df.columns=new_columns# 重命名列#...
Rename Column Name by Index If you want to rename a single column by Index on pandas DataFrame then you can just assign a new value to thedf.columns.values[idx], replace idx with the right index where you wanted to rename. This program first assigns the value ‘Courses_Fee’ to the el...