Python

Homework question is "another option is to use s.split("-"). Use that strategy, again together with map, a lambda function, and int."

How to I add in that x so that it will also be turn into an integer with in the map? I am able to split the "-" from the string of date but don't know how to then in the same line turn it into a Integer.

df["date"].map(lambda x : x.split("-"))