Import From tweepy or tweepy.streaming?

<%= @topic_view.topic.title %>
<%= @topic_view.topic.average_rating %> <%= @topic_view.topic.posts.count { |p| !!p.custom_fields['rating'] } %>

Hi.

I found a tutorial for Tweepy.
Why does the first line import from tweepy.streaming while others use tweepy?
I try to change it to only tweepy and it works.
Any help is appreciated.

Thanks.