--- a/src/pyams_utils/wsgi.py	Sat Nov 23 01:24:11 2019 +0100
+++ b/src/pyams_utils/wsgi.py	Sat Nov 23 14:57:24 2019 +0100
@@ -10,13 +10,12 @@
 # FOR A PARTICULAR PURPOSE.
 #
 
-__docformat__ = 'restructuredtext'
-
-# import standard library
+"""PyAMS_utils.wsgi module
 
-# import interfaces
+This module provides a method decorator which can store it's value into request environment
+"""
 
-# import packages
+__docformat__ = 'restructuredtext'
 
 
 def wsgi_environ_cache(*names):
@@ -25,17 +24,20 @@
     :param [string...] names: keys to cache into environ; len(names) must
         be equal to the result's length or scalar
     """
-    def decorator(fn):
+
+    def decorator(func):
+
         def function_wrapper(self, request):
             scalar = len(names) == 1
             try:
-                rs = [request.environ[cached_key] for cached_key in names]
+                env = [request.environ[cached_key] for cached_key in names]
             except KeyError:
-                rs = fn(self, request)
+                env = func(self, request)
                 if scalar:
-                    rs = [rs, ]
-                request.environ.update(zip(names, rs))
-            return rs[0] if scalar else rs
+                    env = [env, ]
+                request.environ.update(zip(names, env))
+            return env[0] if scalar else env
+
         return function_wrapper
 
     return decorator