Merge pull request joelgrus#87 from cclauss/patch-1

Undefined name: from typing import Dict for line 96

Author: joelgrus

scratch/recommender_systems.py

@@ -22,7 +22,7 @@
                             for user_interests in users_interests
                             for interest in user_interests)
 
-from typing import List, Tuple
+from typing import Dict, List, Tuple
 
 def most_popular_new_interests(
         user_interests: List[str],
@@ -341,4 +341,4 @@ def loop(dataset: List[Rating],
     print(sorted(vectors, key=lambda v: v[-1][0])[:25])
     print(sorted(vectors, key=lambda v: v[-1][0])[-25:])
 
-if __name__ == "__main__": main()
+if __name__ == "__main__": main()