I completed the riddles lab.

I implemented get_riddle, get_random_riddle, and
add_riddle in api.py. I also amended guess_riddle
to return whether it was correct.

api.py

@@ -4,7 +4,7 @@
 # The Riddle API takes care of connecting to the server. 
 
 import requests
-from random import choice
+from random import choice, randrange
 
 class APIError(Exception):
     "A custom error we'll use when something goes wrong with the API"
@@ -29,24 +29,37 @@ class RiddleAPI:
         params = {'id': riddle_id, 'answer': guess}
         response = requests.post(self.server_url + route, json=params)
         if response.ok:
-            return response.json()
+            return response.json()['correct']
+        # I added ['correct'] here because otherwise it kept telling
+        # me "Yes!" even when I knew I put in the wrong response...
+        # Was I supposed to do that? I thought this was supposed to
+        # have been implemented for me already. Or did I accidentally
+        # delete it without realizing?
         else:
             raise APIError(response.json()['errors'])
 
     def get_riddle(self, riddle_id):
         "Fetches a single riddle from the server"
         route = "/show"
-        raise NotImplementedError("The API doesn't support `get_riddle` yet. Can you add it?")
-
+        params = {'id': riddle_id}
+        response = requests.get(self.server_url + route, json=params)
+        if response.ok:
+            return response.json()
+        else:
+            raise APIError(response.json()['errors'])
+        
     def get_random_riddle(self):
         "Fetches all riddles from the server and then randomly returns one"
-        raise NotImplementedError("The API doesn't support `get_random_riddle` yet. Can you add it?")
+        riddle_id = randrange(0,len(self.get_all_riddles()))
+        return self.get_riddle(riddle_id)
+    # Was I supposed to do it this way?
 
     def add_riddle(self, question, answer):
         "Adds a new riddle to the server"
         route = "/new"
-        raise NotImplementedError("The API doesn't support `add_riddle` yet. Can you add it?")
-
-
-    
-
+        params = {'question':question, 'answer':answer}        
+        response = requests.post(self.server_url + route, json=params)
+        if response.ok:
+            return response.json()
+        else:
+            raise APIError(response.json()['errors'])