Docstring fixes; cleanup dead/Py2 vestigial code

1 files changed, 2 insertions, 13 deletions

diff --git a/pyparsing/util.py b/pyparsing/util.py
index e7843d6..1a700ec 100644
--- a/pyparsing/util.py
+++ b/pyparsing/util.py
@@ -87,14 +87,10 @@ class _UnboundedCache:
         def clear(self):
             cache.clear()
 
-        def cache_len(self):
-            return len(cache)
-
         self.size = None
         self.get = types.MethodType(get, self)
         self.set = types.MethodType(set, self)
         self.clear = types.MethodType(clear, self)
-        self.__len__ = types.MethodType(cache_len, self)
 
 
 class _FifoCache:
@@ -108,23 +104,16 @@ class _FifoCache:
 
         def set(self, key, value):
             cache[key] = value
-            try:
-                while len(cache) > size:
-                    cache.popitem(last=False)
-            except KeyError:
-                pass
+            while len(cache) > size:
+                cache.popitem(last=False)
 
         def clear(self):
             cache.clear()
 
-        def cache_len(self):
-            return len(cache)
-
         self.size = size
         self.get = types.MethodType(get, self)
         self.set = types.MethodType(set, self)
         self.clear = types.MethodType(clear, self)
-        self.__len__ = types.MethodType(cache_len, self)
 
 
 def _escapeRegexRangeChars(s):