Lambda including if…elif…else

Question

I want to apply a lambda function to a DataFrame column using if...elif...else within the lambda function.

The df and the code are smth. like:

df=pd.         


        

Answer 1

For readability I prefer to write a function, especially if you are dealing with many conditions. For the original question:

def parse_values(x):
    if x < 2:
       return x * 10
    elif x < 4:
       return x ** 2
    else:
       return x + 10

df['one'].apply(parse_values)