Wrote codes to implement each function.

One place I got stuck was when I was trying to write get_color_dict
because I was not sure how to loop through each person and their favorite colors to count them.
 I got unstuck by going through my notes from CSE 115.

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 p in people:
+        if p["name"] == name:
+            return p["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 p in people:
+        if p["name"] == name:
+            return len(p["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 +63,11 @@ def people_who_like_color(people, color):
         >>> people_who_like_color(family, "indigo")
         []
     """
-    raise NotImplementedError()
+    result = []
+    for p in people:
+        if color in p["favorite_colors"]:
+            result.append(p)
+    return result
 
 def count_people_who_like_color(people, color):
     """Returns the number of people who like a given color. 
@@ -67,7 +77,11 @@ def count_people_who_like_color(people, color):
         >>> count_people_who_like_color(family, "orange")
         1
     """
-    raise NotImplementedError()
+    count = 0
+    for p in people:
+        if color in p["favorite_colors"]:
+            count= count + 1
+    return count
 
 def get_color_dict(people):
     """Returns a dict showing how many people like each color. 
@@ -86,7 +100,15 @@ def get_color_dict(people):
             "orange": 1,
         }
     """
-    raise NotImplementedError()
+    color_counts = {}
+
+    for p in people:
+        for color in p["favorite_colors"]:
+            if color in color_counts:
+                color_counts[color]=color_counts[color] + 1
+        else:
+            color_counts[color] = 1 
+    return color_counts