Checkpoint 1

I was stuck on the very first one because I was trying to use the count
command that we used in the pipes lab. For some reason it wasn't working so
I had to do some research and discovered the len() command that works
in scenarios like this. I was then able to use this command on
some of the other problems.

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 +27,11 @@ def get_email(people, name):
         >>> get_email(friends, "Tad Winters")
         None
     """
-    raise NotImplementedError()
+    for person in people:
+        if person["name"]==name:
+            return person["email"]
+    else:
+        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 +41,12 @@ 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"])
+    else:
+        return None
+
 
 def people_who_like_color(people, color):
     """Returns a list containing only those people who like the given color.
@@ -57,7 +66,11 @@ def people_who_like_color(people, color):
         >>> people_who_like_color(family, "indigo")
         []
     """
-    raise NotImplementedError()
+    people_who_like_color=[]
+    for person in people:
+        if color in person["favorite_colors"]:
+            people_who_like_color.append(person)
+    return people_who_like_color
 
 def count_people_who_like_color(people, color):
     """Returns the number of people who like a given color. 
@@ -67,7 +80,11 @@ def count_people_who_like_color(people, color):
         >>> count_people_who_like_color(family, "orange")
         1
     """
-    raise NotImplementedError()
+    people_who_like_color=[]
+    for person in people:
+        if color in person["favorite_colors"]:
+            people_who_like_color.append("person")
+    return len(people_who_like_color)
 
 def get_color_dict(people):
     """Returns a dict showing how many people like each color. 
@@ -86,8 +103,14 @@ def get_color_dict(people):
             "orange": 1,
         }
     """
-    raise NotImplementedError()
-        
+    color_dict={}
+    for person in people:
+        for color in person["favorite_colors"]:
+            if color in color_dict:
+                color_dict[color]=color_dict[color]+1
+            else:
+                color_dict[color]=1
+    return color_dict