pandas set columns 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: rename column name pandas dataframe

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

Example 3: python: change column name

df = df.rename(columns = {'myvar':'myvar_new'})

Example 4: df reanme columns

df_org = df.copy()
df_org.rename(columns={'A': 'a'}, index={'ONE': 'one'}, inplace=True)
print(df_org)
#         a   B   C
# one    11  12  13
# TWO    21  22  23
# THREE  31  32  33