Access a list within an element of a Pandas DataFrame

Question

I have a Pandas DataFrame which has a list of integers inside one of the columns. I'd like to access the individual elements within this list. I've found a way to do it by using tolist() and turning it back into a DataFrame, but I am wondering if there is a simpler/better way. In this example, I add Column A to the middle element of the list in Column B.

import pandas as pd
df = pd.DataFrame({'A' : (1,2,3), 'B': ([0,1,2],[3,4,5,],[6,7,8])})
df['C'] = df['A'] + pd.DataFrame(df['B'].tolist())[1]
df

Is there a better way to do this?

Answer 1

A bit more straightforward is:

df['C'] = df['A'] + df['B'].apply(lambda x:x[1])