Commits on Apr 21, 2017

1. Bug in most_common_interests_with(user) method definition corrected …

   Corrected `most_common_interests_with(user)` method definition is exactly the same as in the book (page8).
   The same result as the proposed correction would give a method which takes `user_id = user["id"]`argument instead of a dict type `user` argument. However, in that case the code that would be iterating through all the users to display the results would be less clean than in case of `user` argument:
   - For `user` argument:
   ```python
   for user in users:
       print most_common_interests_with(user)
   ```
   For `user_id` argument:
   ```python
   for user_id in range(len(users)):
       print most_common_interests_with(user_id)
   ```

   

   mdusan authored Apr 21, 2017
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