Update and rename dictionaries to dictionaries.py

python/dictionaries.py

@@ -1,10 +1,16 @@
 # DICTIONARIES
+# Create a new dictionary with 3 key-value pairs
 prices = {'shrimp':8.52, 'chicken':4.35, 'beef':6.28}
 print(prices.items())
+
+# to get one item from our prices dictionary, use its key 'chicken' as the index
 print('chicken: ', prices['chicken'])
 
 # UPDATE AND ADD TO A DICTIONARY
+# if beef already exists, this will update the price.
+# if not, it will add beef to the dictionary
 prices['beef'] = 2.99
 prices['pork'] = 7.55
+
 print(prices.keys())
 print(prices.values())