The growth team wants to nudge people who have never posted. First, they need to know how many there are in each country.
Using users.csv and posts.csv, store the number of users who have never made a post, per country, as a Series.
Expected answer
Store your answer in result.
Hints, the later steps and the answer come with Pro.
import pandas as pd
users = pd.read_csv("users.csv")
posts = pd.read_csv("posts.csv")
result = ...