Fix USERS f-string for last name.

shoshan · shoshan · commit 8f436223912f · 2019-01-15T06:00:16.000+02:00
Add __repr__ for User Class in printing behalf. comply tp PEP-8 and to general convention that eval(repr(x)) should be x, thanks @rmariano
diff --git a/Chapter03/packing_1.py b/Chapter03/packing_1.py
@@ -12,8 +12,9 @@ def __init__(self, user_id, first_name, last_name):
         self.user_id = user_id
         self.first_name = first_name
         self.last_name = last_name
+
     def __repr__(self):
-        return str(self.user_id) + ' ' + self.first_name + ' ' + self.last_name
+        return f"{self.__class__.__name__}({self.user_id!r}, {self.first_name!r}, {self.last_name!r})"
 
 
 def bad_users_from_rows(dbrows) -> list:
