Replace whole string if it contains substring in pandas

Question

I want to replace all strings that contain a specific substring. So for example if I have this dataframe:

import pandas as pd
df = pd.DataFrame({\'name\': [\         


        

Answer 1

You can use apply with a lambda. The x parameter of the lambda function will be each value in the 'sport' column:

df.sport = df.sport.apply(lambda x: 'ball sport' if 'ball' in x else x)