Let's do an instance/module-based API for serializers

vcr/serializers/yamlserializer.py

@@ -7,18 +7,16 @@ except ImportError:
     from yaml import Loader, Dumper
 
 
-class YamlSerializer(object):
-    @classmethod
-    def load(cls, cassette_path):
-        data = yaml.load(open(cassette_path), Loader=Loader)
-        requests = [r['request'] for r in data]
-        responses = [r['response'] for r in data]
-        return requests, responses
+def load(cassette_path):
+    data = yaml.load(open(cassette_path), Loader=Loader)
+    requests = [r['request'] for r in data]
+    responses = [r['response'] for r in data]
+    return requests, responses
 
-    @classmethod
-    def dumps(cls, requests, responses):
-        data = ([{
-            'request': request,
-            'response': response,
-        } for request, response in zip(requests, responses)])
-        return yaml.dump(data, Dumper=Dumper)
+
+def dumps(requests, responses):
+    data = ([{
+        'request': request,
+        'response': response,
+    } for request, response in zip(requests, responses)])
+    return yaml.dump(data, Dumper=Dumper)