Pandas - Trying to assign values to dataframe based on multiple conditions

Question

I am trying to assign a value to a column based on a selection of multiple criteria. I'm trying to create the following logic:

if field1 is null and field2 is null then assign fieldTemp to 0.

I have no problem applying the logic based on one column:

df.loc[df['field1'].isnull(), 'fieldTemp'] = 0

It gets difficult once I try and test for 'field2' is null with and and operator. Anybody know if there is a way to accomplish this?

Answer 1

We need two conditions

df.loc[df['field1'].isnull() & df['field3'].isnull(), 'fieldTemp'] = 0