@DarkDk123 thank you. This should be updated in the course itself. @mrdbourke ?

by the way, i am using pandas 2.2.2 the correct line should be

car_sales_missing.fillna({"Odometer": car_sales_missing["Odometer"].mean(numeric_only=True)}, inplace=True)

@DarkDk123 forgot about numeric_only=True and has an extra ,

from zero-to-mastery-ml.

It's a FutureWarning

Because you're performing "Chained Indexing", and it has inherently unpredictable results (may return a view or copy)

So it's suggested by pandas to modify DataFrames directly, not on view-or-copy,

Instead, You can use this car_sales_missing.fillna({"Odometer": car_sales_missing["Odometer"].mean()}, , inplace=True)

This here :

from zero-to-mastery-ml.