Use a normal dictionary for caching nltk.data.load() rather than a we…

…akref dictionary svn/trunk@7825
nltk · Feb 28, 2009 · 1fcfaca · 1fcfaca
1 parent 182d621
commit 1fcfaca
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/nltk/data.py b/nltk/data.py
@@ -261,8 +261,10 @@ def __repr__(self):
 # Access Functions
 ######################################################################
 
-_resource_cache = weakref.WeakValueDictionary()
-"""A weakref dictionary used to cache resources so that they won't
+# Don't use a weak dictionary, because in the common case this
+# causes a lot more reloading that necessary.
+_resource_cache = {}
+"""A dictionary used to cache resources so that they won't
    need to be loaded more than once."""
 
 def find(resource_name):