for does not leak inner bindings to the outer world, thats why teams_with_scores is not available outside.
As you have it now, your code is free of side effects (ignoring the inspect which is for debugging only, I assume), so you could remove the for without changing the observable behaviour of your program.
If I understand you correctly, what youz actually want is this:
# with comprehension
teams_with_scores = for team <- teams do
%{name: team.name, team_score: get_team_score(team)}
end
# using `Enum.map/2`
teams_with_scores = Enum.map(teams, fn team ->
%{name: team.name, team_score: get_team_score(team)}
end
Just replace everything of your code beginning with teams_with_scores = [] and endingwith the IO.inspect(teams_with_scores) with one of my suggestions.
