From cbab2ac7a4f0ff6c4521fe87d0baa3db3eae94c9 Mon Sep 17 00:00:00 2001
From: "Jip J. Dekker" <jip@dekker.li>
Date: Sat, 7 Jun 2014 12:21:00 +0200
Subject: [PATCH] The difference between class and object variables

---
 FourmiCrawler/sources/NIST.py | 2 +-
 FourmiCrawler/spider.py       | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/FourmiCrawler/sources/NIST.py b/FourmiCrawler/sources/NIST.py
index 10496ab..3e061ae 100644
--- a/FourmiCrawler/sources/NIST.py
+++ b/FourmiCrawler/sources/NIST.py
@@ -22,11 +22,11 @@ class NIST(Source):
 
     search = 'cgi/cbook.cgi?Name=%s&Units=SI&cTP=on'
 
-    ignore_list = set()
     cfg = {}
 
     def __init__(self, config={}):
         Source.__init__(self, config)
+        self.ignore_list = set()
         self.cfg = config
         if 'reliability' not in self.cfg or self.cfg['reliability'] == '':
             log.msg('Reliability not set for NIST', level=log.WARNING)
diff --git a/FourmiCrawler/spider.py b/FourmiCrawler/spider.py
index 60f7363..5c09f07 100644
--- a/FourmiCrawler/spider.py
+++ b/FourmiCrawler/spider.py
@@ -9,8 +9,6 @@ class FourmiSpider(Spider):
     A spider writen for the Fourmi Project which calls upon all available sources to request and scrape data.
     """
     name = "FourmiSpider"
-    _sources = []
-    synonyms = set()
 
     def __init__(self, compound=None, selected_attributes=[".*"], *args, **kwargs):
         """
@@ -18,6 +16,8 @@ class FourmiSpider(Spider):
         :param compound: compound that will be searched.
         :param selected_attributes: A list of regular expressions that the attributes should match.
         """
+        self._sources = []
+        self.synonyms = set()
         super(FourmiSpider, self).__init__(*args, **kwargs)
         self.synonyms.add(compound)
         self.selected_attributes = selected_attributes