I will explain how to rename columns with a list of values in Pandas DataFrame but remember with a list, you shouldrename all columns. Even if any column you don’t want to rename, still you need to pass the actual column names with the list. Advertisements Key Points – You can rename...
To rename a single column, use thecolumnsparameter in therename()method with a dictionary that maps only the specific column. Use theDataFrame.columnsattribute to directly modify column names by assigning a new list of names. Ensure the new list has the same length as the original. Related:10...
student_df = pd.DataFrame(student_dict)# column names before renameprint(student_df.columns.values)# rename all columns using mapping conventionstudent_df = student_df.rename(columns={'name':"a",'age':"b",'marks':"c"})# after renameprint(student_df.columns.values) Run Output: Columns b...
("alpha", "1", "test"), etc.df_ex.columns = pd.MultiIndex.from_tuples([col.split(".") for col in df_ex.columns])# Group by prefix and suffix and take the mean of each column groupresult = df_ex.groupby(level=[0,2], axis=1).mean()# Rename the resulting columnsresult....
rename(columns={0: split_column_name}) 通过转置,实现部分column和index的互换:如果在DataFrame中,我们希望将一部分column name变成一列index,同时将一列本来是index的列变成column names,那么可以通过下面的方法实现: index_cols = ['Name', 'City', 'County', 'Update Date', 'Week'] # 把不准备变的...
# renaming the column "A" df.rename(columns={"Name":"Names"}, inplace=True) # displaying the columns after renaming print(df.columns) 输出: 示例2:重命名多个列。 Python3实现 # import pandas package importpandasaspd # defining a dictionary ...
The Python programming code below shows how to exchange only some particular column names in a pandas DataFrame.For this, we can use the rename function as shown below:data_new2 = data.copy() # Create copy of DataFrame data_new2 = data_new2.rename(columns = {"x1": "col1", "x3":...
In this example, we will rename a single column using `.rename()`. You just have to provide a dictionary ofoldandnewcolumn names to the `columns` argument. For example: {“old_column_name” : “new_column_name”} As we can observe, we have replaced “id” with “ID” successfully....
The output of Pandas rename By default, the rename method will output anewPython dataframe, with new column names or row labels. As noted above, this means that by default, rename will leave the original dataframe unchanged. If you setinplace = True, rename won’t produce any new output....
import pandas as pd def test(): # 读取Excel文件 df = pd.read_excel('测试数据.xlsx') # 插入列 df.insert(loc=2, column='爱好', value=None) # 保存修改后的DataFrame到新的Excel文件 df.to_excel('结果.xlsx', index=False) test() 3、插入多列 假设我需要在D列(班级)后面插入5列,表头名...