pandasDataFrame.rename()accepts a dict(dictionary) as a param for columns you want to rename, so you just pass a dict with a key-value pair; the key is an existing column you would like to rename and the value would be your preferred column name. # Rename a Single Column df2=df.rena...
This is a simple and effective way to rename columns in pandas. Frequently asked questions about renaming columns in pandas: How to Rename Multiple Columns? To rename multiple columns, use therenamemethod with a dictionary mapping old column names to new ones. Example: df.rename(columns={'OldN...
Python program to rename all columns in Pandas DataFrame # Importing pandas packageimportpandasaspd# Creating a dictionary of student marksd={"Peter":[65,70,70,75],"Harry":[45,56,66,66],"Tom":[67,87,65,53],"John":[56,78,65,64] }# Now, Create DataFrame and assign index name as...
"marks": [85.10,77.80,91.54]}# Create DataFrame from dictstudent_df = pd.DataFrame(student_dict)# before renameprint(student_df.columns.values)# rename column names using functionstudent_df.rename(columns=str.upper, inplace=True)# after renameprint(student_df.columns.values)...
Use therename()Function to Rename Multiple Columns Using Pandas The Pandas library provides therename()function used to rename the columns of a DataFrame. Therename()function takes amapper, a dictionary-like data structure that contains the renaming column as the key and the name as the value....
We can rename single column or multiple columns with this function, depending on the values in the dictionary. Let’s look into some examples of using Pandas rename() function. 1. Pandas Rename Columns import pandas as pd d1 = {'Name': ['Pankaj', 'Lisa', 'David'], 'ID': [1, 2...
Inside the parenthesis, we’re using thecolumnsparameter to specify the columns we want to rename, and the new name that we want to use. This ‘old name’/’new name’ pair is presented as adictionaryin the form{'old name':'new name'}. ...
Method 1: Using the rename() method The rename() method is the most commonly used method to rename columns in a Pandas DataFrame. The rename() method can be used to rename one or more columns at once, by passing a dictionary of old column names to new column names as the argument. ...
You can certainly rename only specific columns in a Pandas DataFrame using a list. Instead of renaming all columns, you can create a dictionary where the keys are the current column names you want to change, and the values are the corresponding new column names. Can I rename columns based ...
We can also rename multiple columns in a DataFrame by providing a dictionary mapping of old column names to new column names. Let’s see an example of renaming multiple columns: importpandasaspd# Creating a sample DataFramedata={'A':[1,2,3],'B':[4,5,6],'C':[7,8,9]}df=pd.DataF...