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...
index=["Maths","Physics","Chemistry","English"])# Printing the DataFrameprint("DataFrame before renamaing column names...")print(df)# Renamaing column name "Harry" to "Mike"# and, "Tom" to "Jason"df.rename(columns={'Harry':'Mike','Tom':'Jason'},inplace=True)# Printing the DataFr...
通过传递一个可调用对象来实现列名重命名。示例3：原地修改DataFrame的列名import pandas as pddata = {'A': [1, 2, 3],'B': [4, 5, 6]}df = pd.DataFrame(data)print("Original DataFrame:")print(df)df.rename(columns={'A': 'Column1'}, inplace=True)print("\nModified DataFrame:")print(d...
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...
In the below example, we rename all column names to UPPER CASE using the string functionstr.upper. importpandasaspd student_dict = {"name": ["Joe","Nat","Harry"],"age": [20,21,19],"marks": [85.10,77.80,91.54]}# Create DataFrame from dictstudent_df = pd.DataFrame(student_dict)#...
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...
importpandasaspd# 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.replace(['已',np.nan],['是','否']) 三、重命名 rename() 在数据处理的过程有时候需要对列索引进行重命名,一个典型的例子就是对于数据的检索或其他操作df[column]对于任意列名均有效,但是df.column只在列名是有效的Python变量名时才有效。
section 步骤1: 导入Pandas库 step1: 导入Pandas库[import pandas as pd] section 步骤2: 创建DataFrame step2: 创建DataFrame[df = pd.DataFrame(data)] section 步骤3: 使用rename更改列名 step3: 使用rename更改列名[df.rename(columns={'old_column_name': 'new_column_name'}, inplace=True)] ...