Changing the data type to category
Since the rating
column only has a few possible values, you'll change its data type to category in order to store the data more efficiently. You'll also specify a logical order for the categories, which will be useful for future exercises.
Este ejercicio forma parte del curso
Analyzing Police Activity with pandas
Instrucciones del ejercicio
- Create a
CategoricalDtype
object calledcats
that lists the weather ratings in a logical order:'good'
,'bad'
,'worse'
. Make sure to specify that the categories should be treated as ordered. - Use the
cats
object to change the data type of therating
column from object to category. - Examine the head of the
rating
column to confirm that the categories are logically ordered.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Specify the logical order of the weather ratings
cats = pd.CategoricalDtype([____], ordered=____)
# Change the data type of 'rating' to category
weather['rating'] = weather.rating.____(____)
# Examine the head of 'rating'
print(____)