From 1276b12c258b42a68ef79c195b5cbd0dee0e52fa Mon Sep 17 00:00:00 2001
From: Julia Medina <who.knows.shia@gmail.com>
Date: Thu, 22 May 2014 05:38:31 -0300
Subject: [PATCH] New SettingsAttribute class

---
 scrapy/settings/__init__.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/scrapy/settings/__init__.py b/scrapy/settings/__init__.py
index 345c3c133..825e736e0 100644
--- a/scrapy/settings/__init__.py
+++ b/scrapy/settings/__init__.py
@@ -2,6 +2,31 @@ import json
 from . import default_settings
 
 
+class SettingsAttribute(object):
+
+    """Class for storing data related to settings attributes.
+
+    This class is intended for internal usage, you should try Settings class
+    for settings configuration, not this one.
+    """
+
+    def __init__(self, value, priority):
+        self.value = value
+        self.priority = priority
+
+    def set(self, value, priority):
+        """Sets value if priority is higher or equal than current priority."""
+        if priority >= self.priority:
+            self.value = value
+            self.priority = priority
+
+    def __str__(self):
+        return "<SettingsAttribute value={self.value!r} " \
+               "priority={self.priority}>".format(self=self)
+
+    __repr__ = __str__
+
+
 class Settings(object):
 
     def __init__(self, values=None):