Chapter 4 TypeError:unhashable type:'slice'

[chenlee1990]

when I write this line berri_bikes.loc[:, 'weekday'] = berri_bikes.index.weekday

If we run then we will see the bug: TypeError:unhashable type:'slice'

Anyone can tell me what happen and how to fix the bug?

[chenlee1990]

the problem is sloved

[jozefkip]

What was the fix? I seem to run into the same problem.

edit: apparently when creating berri_bikes it is essential to use the double brackets: berri_bikes = bikes[['Berri 1']].copy()