Remove unused import

Remove dependancy on PlugInIndexes product by using randint directly to generate rids. randint now works properly with negative number in Python 2.2
Fix bare except. Simplify python implementation of safe_callable

lib/python/Products/ZCatalog/Catalog.py

@@ -14,7 +14,6 @@
 from Persistence import Persistent
 import Acquisition
 import ExtensionClass
-from Products.PluginIndexes.TextIndex.Lexicon import Lexicon
 from MultiMapping import MultiMapping
 import Record
 from Missing import MV
@@ -26,25 +25,19 @@ from BTrees.IIBTree import intersection, weightedIntersection, IISet
 from BTrees.OIBTree import OIBTree
 from BTrees.IOBTree import IOBTree
 import BTrees.Length
-from Products.PluginIndexes.common.randid import randid
 
 import time, sys, types
 from bisect import bisect
-
-# Collector #771: provide a safe_callable() method with a
-# fallback (when ZCatalog might be used outside Zope)
+from random import randint
 
 try:
     from DocumentTemplate.cDocumentTemplate import safe_callable
-except:
-
+except ImportError:
+    # Fallback to python implementation to avoid dependancy on DocumentTemplate
     def safe_callable(ob):
         # Works with ExtensionClasses and Acquisition.
         if hasattr(ob, '__class__'):
-            if hasattr(ob, '__call__'):
-                return 1
-            else:
-                return isinstance(ob, types.ClassType)
+            return hasattr(ob, '__call__') or isinstance(ob, types.ClassType)
         else:
             return callable(ob)
 
@@ -324,12 +317,13 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
             # new data
 
             if type(data) is IOBTree:
-                # New style, get radom id
+                # New style, get random id
 
                 index=getattr(self, '_v_nextid', 0)
-                if index%4000 == 0: index = randid()
+                if index % 4000 == 0: 
+                    index = randint(-2000000000, 2000000000)
                 while not data.insert(index, newDataRecord):
-                    index=randid()
+                    index = randint(-2000000000, 2000000000)
 
                 # We want ids to be somewhat random, but there are
                 # advantages for having some ids generated