Converting a lambda function to an if else statement

Question

I'm trying to convert this Python lambda function to an if-else statement so that I can add other arguments onto it. Could someone explain how this Lambda would look like if converted to an if-esle statement?

df['type'] = df[FEATURE_NAME].map(lambda column_name: 'property' if is_categorical(column_name) else 'metric')

@PaulH no it isn't, it's a conditional expression. And that is an important distinction, since you cannot put complex statements in lambda functions, they accept only expressions. — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Oct 10, 2019 at 21:15
@juanpa.arrivillaga see my response to the other person who said nearly the exact same thing — Paul H
– Paul H, Commented Oct 10, 2019 at 21:16

Confucius Cat · Accepted Answer · 2019-10-10 20:47:55Z

1

Is this the answer you're looking for?

def foo(column_name): 
    if is_categorical(column_name):
        return 'property'
    else:
        return 'metric'     

df['type'] = df[FEATURE_NAME].map(foo)

answered Oct 10, 2019 at 20:47

Confucius Cat

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