@@ -0,0 +1 @@
+**/*.pyc
@@ -42,7 +42,7 @@
 
 
 # Example 5
-chile_ranks = {'ghost': 1, 'habañero': 2, 'cayenne': 3}
+chile_ranks = {'ghost': 1, 'habanero': 2, 'cayenne': 3}
 rank_dict = {rank: name for name, rank in chile_ranks.items()}
 chile_len_set = {len(name) for name in rank_dict.values()}
 print(rank_dict)
 
@@ -34,11 +34,11 @@
 # Example 2
 import json
 
-def load_json_key(data, key):          
+def load_json_key(data, key):
     try:
         result_dict = json.loads(data)  # May raise ValueError
     except ValueError as e:
-        raise KeyError() from e
+        raise KeyError from e
     else:
         return result_dict[key]         # May raise KeyError
 
 
@@ -104,7 +104,7 @@ def average_grade(self, name):
                 total_weight += weight
             score_sum += subject_avg / total_weight
             score_count += 1
-        return score_sum / float(score_count)
+        return score_sum / score_count
 
 
 # Example 8
 
@@ -29,7 +29,7 @@ def __init__(self, period):
         self.reset_time = datetime.now()
         self.quota = 0
 
-    def __str__(self):
+    def __repr__(self):
         return 'Bucket(quota=%d)' % self.quota
 
 bucket = Bucket(60)
@@ -86,7 +86,7 @@ def __init__(self, period):
         self.max_quota = 0
         self.quota_consumed = 0
 
-    def __str__(self):
+    def __repr__(self):
         return ('Bucket(max_quota=%d, quota_consumed=%d)' %
                 (self.max_quota, self.quota_consumed))
 
 
@@ -79,7 +79,7 @@ def __getattr__(self, name):
             value = 'Value for %s' % name
             setattr(self, name, value)
             return value
-    
+
     data = MissingPropertyDB()
     data.foo  # Test this works
     data.bad_name
@@ -106,7 +106,7 @@ def __getattr__(self, name):
 # Example 8
 class SavingDB(object):
     def __setattr__(self, name, value):
-        # Save some data to the DB
+        # Save some data to the DB log
         pass
         super().__setattr__(name, value)
 
 
@@ -53,10 +53,10 @@ class Customer(object):
 # Example 4
 class Meta(type):
     def __new__(meta, name, bases, class_dict):
-        for name, value in class_dict.items():
+        for key, value in class_dict.items():
             if isinstance(value, Field):
-                value.name = name
-                value.internal_name = '_' + name
+                value.name = key
+                value.internal_name = '_' + key
         cls = type.__new__(meta, name, bases, class_dict)
         return cls
 
 
@@ -23,7 +23,7 @@
 # Example 1
 def gcd(pair):
     a, b = pair
-    high, low = max(a, b), min(a, b)
+    low = min(a, b)
     for i in range(low, 0, -1):
         if a % i == 0 and b % i == 0:
             return i
 
@@ -91,5 +91,5 @@
 
 # Example 9
 nepal = pytz.timezone('Asia/Katmandu')
-nepa_dt = nepal.normalize(utc_dt.astimezone(nepal))
-print(nepa_dt)
+nepal_dt = nepal.normalize(utc_dt.astimezone(nepal))
+print(nepal_dt)
@@ -47,7 +47,7 @@
 from decimal import ROUND_UP
 rate = Decimal('1.45')
 seconds = Decimal('222')  # 3*60 + 42
-cost = rate * seconds / 60
+cost = rate * seconds / Decimal('60')
 print(cost)
 
 
@@ -59,7 +59,7 @@
 # Example 7
 rate = Decimal('0.05')
 seconds = Decimal('5')
-cost = rate * seconds / 60
+cost = rate * seconds / Decimal('60')
 print(cost)