change columns in pandas code example

Example 1: rename df column

import pandas as pd
data = pd.read_csv(file)
data.rename(columns={'original':'new_name'}, inplace=True)

Example 2: renaming headers pandasd

df = df.rename(columns={"old_col1": "new_col1", "old_col2": "new_col2"})

Example 3: how to change the columns of a dataframe in python

new_columns = {"col1": "1st", "col2": "2nd"}
df_new = df.rename(columns=new_columns)

"""
 col1 | col2 | col3            1st | 2nd | col3
   a  |   d  |	 g              a  |  d  |  g
   b  |   e  |   h		=>      b  |  e  |  h
   c  |   f  |   i              c  |  f  |  i
"""