Rajjoshi77 completed the task

client3.py

@@ -35,14 +35,16 @@ def getDataPoint(quote):
     stock = quote['stock']
     bid_price = float(quote['top_bid']['price'])
     ask_price = float(quote['top_ask']['price'])
-    price = bid_price
+    price = (bid_price + ask_price)/2.0 #mean of result
     return stock, bid_price, ask_price, price
 
 
 def getRatio(price_a, price_b):
     """ Get ratio of price_a and price_b """
-    """ ------------- Update this function ------------- """
-    return 1
+    """ ------------- Update this function ------------- """   
+    if(price_b ==0):#for zero exception handling
+        return
+    return price_a/price_b
 
 
 # Main
@@ -52,8 +54,11 @@ def getRatio(price_a, price_b):
         quotes = json.loads(urllib.request.urlopen(QUERY.format(random.random())).read())
 
         """ ----------- Update to get the ratio --------------- """
+        prices = {}
         for quote in quotes:
             stock, bid_price, ask_price, price = getDataPoint(quote)
+            prices[stock] = price
             print("Quoted %s at (bid:%s, ask:%s, price:%s)" % (stock, bid_price, ask_price, price))
 
-        print("Ratio %s" % getRatio(price, price))
+    print("Ratio %s" % getRatio(prices['ABC'], prices['DEC']))
+

client_test.py

@@ -8,18 +8,48 @@ def test_getDataPoint_calculatePrice(self):
       {'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
     ]
     """ ------------ Add the assertion below ------------ """
-
-  def test_getDataPoint_calculatePriceBidGreaterThanAsk(self):
+  for quotes in quotes:
+      self.assertEqual(getDataPoint(quotes), (quotes['stock'], quotes['top_bid']['price'], quotes['top_ask']['price'], (quotes['top_bid']['price'] + quotes['top_ask']['price']) / 2))
+
+ def test_getDataPoint_calculatePriceBidGreaterThanAsk(self):
     quotes = [
       {'top_ask': {'price': 119.2, 'size': 36}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 120.48, 'size': 109}, 'id': '0.109974697771', 'stock': 'ABC'},
       {'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
     ]
     """ ------------ Add the assertion below ------------ """
-
+for quotes in quotes:
+      self.assertEqual(getDataPoint(quotes), (quotes['stock'], quotes['top_bid']['price'], quotes['top_ask']['price'], (quotes['top_bid']['price'] + quotes['top_ask']['price']) / 2))
 
   """ ------------ Add more unit tests ------------ """
 
-
+  def test_getDataPoint_zeroPrices(self):
+      quote = {
+          'top_ask': {'price': 0.0, 'size': 36},
+          'top_bid': {'price': 0.0, 'size': 109},
+          'timestamp': '2019-02-11 22:06:30.572453',
+          'id': '0.4', 'stock': 'LMN'
+      }
+      expected_price = 0.0
+      self.assertEqual(getDataPoint(quote), ('LMN', 0.0, 0.0, expected_price))
+
+def test_getDataPoint_missingAsk(self):
+        quote = {
+            'top_ask': {'size': 36},  # price missing
+            'top_bid': {'price': 120.0, 'size': 109},
+            'timestamp': '2019-02-11 22:06:30.572453',
+            'id': '0.5', 'stock': 'ERR'
+        }
+        with self.assertRaises(KeyError):
+            getDataPoint(quote)
+  def test_getDataPoint_nonNumericPrices(self):
+      quote = {
+          'top_ask': {'price': 'abc', 'size': 36},
+          'top_bid': {'price': 120.0, 'size': 109},
+          'timestamp': '2019-02-11 22:06:30.572453',
+          'id': '0.6', 'stock': 'BAD'
+      }
+      with self.assertRaises(ValueError):
+          getDataPoint(quote)
 
 if __name__ == '__main__':
     unittest.main()