Pandas/Python: Set value of one column based on value in another column

Question

I need to set the value of one column based on the value of another in a Pandas dataframe. This is the logic:

if df[\'c1\'] == \'Value\':
    df[\'c2\'] = 10         


        

Answer 1

try:

df['c2'] = df['c1'].apply(lambda x: 10 if x == 'Value' else x)