pandas combine two columns with null values

Question

I have a df with two columns and I want to combine both columns ignoring the NaN values. The catch is that sometimes both columns have NaN values in which case I want the new co

Answer 1

Use fillna on one column with the fill values being the other column:

df['foodstuff'].fillna(df['type'])

The resulting output:

0      apple-martini
1          apple-pie
2    strawberry-tart
3            dessert
4               None