Answers for "apply on dataframe access multiple columns"

apply on dataframe access multiple columns

df['col_3'] = df.apply(lambda x: x.col_1 + x.col_2, axis=1)

assign multiple columns pandas

import pandas as pd

df = {'col_1': [0, 1, 2, 3],
        'col_2': [4, 5, 6, 7]}
df = pd.DataFrame(df)

df[[ 'column_new_1', 'column_new_2','column_new_3']] = [np.nan, 'dogs',3]  #thought this wo