Made function to count a person's favorite colors.

friend_functions.py

@@ -40,7 +40,9 @@ def count_favorite_colors(people, name):
         >>> count_favorite_colors(family, "Raphael Chambers")
         1
     """
-    raise NotImplementedError()
+    for person in people:
+        if person["name"] == name:
+            return len(person["favorite_colors"])
 
 def people_who_like_color(people, color):
     """Returns a list containing only those people who like the given color.