Add support for ETag + If-None-Match headers

1 files changed, 7 insertions, 3 deletions

diff --git a/requests_cache/models/response.py b/requests_cache/models/response.py
index 74dd7f7..2bbe9d8 100755
--- a/requests_cache/models/response.py
+++ b/requests_cache/models/response.py
@@ -76,15 +76,19 @@ class CachedResponse(Response):
         return obj
 
     @property
-    def _content_consumed(self):
-        """For compatibility with Response; will always be True for a cached response"""
+    def _content_consumed(self) -> bool:
+        """For compatibility with requests.Response; will always be True for a cached response"""
         return True
 
     @_content_consumed.setter
-    def _content_consumed(self, value):
+    def _content_consumed(self, value: bool):
         pass
 
     @property
+    def etag(self) -> Optional[str]:
+        return self.headers.get('ETag')
+
+    @property
     def from_cache(self) -> bool:
         return True