I was able to write code that prints a weather forecast to my liking.

I used some code from older functions to help me write the newer program.

All these systems involve using named arguments to run certain actions.

friend_functions.py

@@ -17,7 +17,7 @@ def count_people(people):
         >>> count_people(friends)
         10
     """
-    raise NotImplementedError()
+    return len(people)
 
 def get_email(people, name):
     """Returns the named person's email address. If there is no such person, returns None.
@@ -27,7 +27,10 @@ def get_email(people, name):
         >>> get_email(friends, "Tad Winters")
         None
     """
-    raise NotImplementedError()
+    for person in people:
+        if person["name"] == name:
+            return person["email"]
+    return None
 
 def count_favorite_colors(people, name):
     """Returns the number of colors liked by the named person. If there is no such person, returns None.
@@ -37,7 +40,10 @@ 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"])
+    return None
 
 def people_who_like_color(people, color):
     """Returns a list containing only those people who like the given color.
@@ -57,7 +63,10 @@ def people_who_like_color(people, color):
         >>> people_who_like_color(family, "indigo")
         []
     """
-    raise NotImplementedError()
+    for person in people:
+        if person["favorite_colors"] == color:
+            return people
+    return None
 
 def count_people_who_like_color(people, color):
     """Returns the number of people who like a given color. 
@@ -67,7 +76,9 @@ def count_people_who_like_color(people, color):
         >>> count_people_who_like_color(family, "orange")
         1
     """
-    raise NotImplementedError()
+    for person in people:
+        if person["favorite_colors"] == color:
+            return len(people)
 
 def get_color_dict(people):
     """Returns a dict showing how many people like each color.