import pandas as pd import numpy as np
raw_data = {'name': ['Willard Morris', 'Al Jennings', 'Omar Mullins', 'Spencer McDaniel'], 'age': [20, 19, 22, 21], 'favorite_color': ['blue', 'red', 'yellow', "green"], 'grade': [88, 92, 95, 70]} df = pd.DataFrame(raw_data, index = ['Willard Morris', 'Al Jennings', 'Omar Mullins', 'Spencer McDaniel']) df
df.columns = ['test_age', 'test_favorite_color','test_grade', 'test_name'] df.head()
df.rename(columns={'age': 'is_just_a_number'}, inplace=True) df.head()