Demonstrate how a Projection might be a nice way to assign some parameters.use-projection

2 files changed, 4 insertions, 5 deletions

diff --git a/cherrypy/_cptools.py b/cherrypy/_cptools.py
index 92c2b656..e51a963c 100644
--- a/cherrypy/_cptools.py
+++ b/cherrypy/_cptools.py
@@ -25,6 +25,8 @@ are generally either modules or instances of the tools.Tool class.
 import sys
 import warnings
 
+from jaraco.collections import Projection
+
 import cherrypy
 from cherrypy._helper import expose
 
@@ -323,11 +325,7 @@ class SessionTool(Tool):
 
         # Grab cookie-relevant tool args
         relevant = 'path', 'path_header', 'name', 'timeout', 'domain', 'secure'
-        conf = dict(
-            (k, v)
-            for k, v in self._merged_args().items()
-            if k in relevant
-        )
+        conf = Projection(relevant, self._merged_args())
         _sessions.set_response_cookie(**conf)
 
 
diff --git a/setup.py b/setup.py
index df6630c7..9ea5bd5c 100755
--- a/setup.py
+++ b/setup.py
@@ -58,6 +58,7 @@ install_requires = [
     'cheroot>=5.9.1',
     'portend>=2.1.1',
     'jaraco.classes',
+    'jaraco.collections',
 ]
 
 extras_require = {