# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1232761319 -3600
# Node ID 09d961170f35a4f1b2adc05c08b6a5daeef6ade6
# Parent  ac2d54b745165a3e84fae07784e0145472b399f3
Fix unused objects optimisation for Attr instances with no predictable
assignment values.

diff -r ac2d54b74516 -r 09d961170f35 micropython/inspect.py
--- a/micropython/inspect.py	Sun Jan 18 02:09:41 2009 +0100
+++ b/micropython/inspect.py	Sat Jan 24 02:41:59 2009 +0100
@@ -156,14 +156,15 @@
 
                     # Only remove entries for classes and functions, not methods.
 
-                    for attr_value in value.assignment_values:
-                        if (isinstance(attr_value, Function) and not attr_value.is_method() or
-                            isinstance(attr_value, Class)) and not attr_value.referenced:
-                            pass
+                    if attr_value is not None:
+                        for attr_value in value.assignment_values:
+                            if (isinstance(attr_value, Function) and not attr_value.is_method() or
+                                isinstance(attr_value, Class)) and not attr_value.referenced:
+                                pass
+                            else:
+                                break
                         else:
-                            break
-                    else:
-                        del self[name]
+                            del self[name]
 
             # Complain about globals not initialised at the module level.