### Eclipse Workspace Patch 1.0
#P jython-trunk
Index: NEWS
===================================================================
--- NEWS	(revision 7128)
+++ NEWS	(working copy)
@@ -2,6 +2,7 @@
 
 Jython 2.5.2rc1
   Bugs Fixed
+    - [ 1452 ] pydoc help() function fails because sys.executable is None in stand-alone Jython
     - [ 1568 ] sys.stdout.encoding returns wrong value in Windows with Jython 2.5.1 (fixed on Java 6 only)
     - [ 1647 ] zxJDBC does not handle NVARCHAR
 
Index: Lib/pydoc.py
===================================================================
--- Lib/pydoc.py	(revision 7131)
+++ Lib/pydoc.py	(working copy)
@@ -1623,7 +1623,11 @@
         self.input = input
         self.output = output
         self.docdir = None
-        execdir = os.path.dirname(sys.executable)
+        if sys.executable is None:
+            execdir = os.getcwd()
+        else:
+            execdir = os.path.dirname(sys.executable)
+        
         homedir = os.environ.get('PYTHONHOME')
         for dir in [os.environ.get('PYTHONDOCS'),
                     homedir and os.path.join(homedir, 'doc'),