Add use_cassette class so functinos that are decorated with use_cassette can be called multiple times.

vcr/cassette.py

@@ -1,12 +1,10 @@
 '''The container for recorded requests and responses'''
-
+import functools
 try:
     from collections import Counter
 except ImportError:
     from .compat.counter import Counter
 
-from contextdecorator import ContextDecorator
-
 # Internal imports
 from .patch import install, reset
 from .persist import load_cassette, save_cassette
@@ -16,7 +14,29 @@ from .matchers import requests_match, uri, method
 from .errors import UnhandledHTTPRequestError
 
 
-class Cassette(ContextDecorator):
+class use_cassette(object):
+
+    def __init__(self, cls, *args, **kwargs):
+        self.args = args
+        self.kwargs = kwargs
+        self.cls = cls
+
+    def __enter__(self):
+        self._cassette = self.cls.load(*self.args, **self.kwargs)
+        return self._cassette.__enter__()
+
+    def __exit__(self, *args):
+        return self._cassette.__exit__(*args)
+
+    def __call__(self, function):
+        @functools.wraps(function)
+        def wrapped(*args, **kwargs):
+            with self:
+                return function(*args, **kwargs)
+        return wrapped
+
+
+class Cassette(object):
     '''A container for recorded requests and responses'''
 
     @classmethod
@@ -26,6 +46,10 @@ class Cassette(ContextDecorator):
         new_cassette._load()
         return new_cassette
 
+    @classmethod
+    def use_cassette(cls, *args, **kwargs):
+        return use_cassette(cls, *args, **kwargs)
+
     def __init__(self,
                  path,
                  serializer=yamlserializer,