*** __builtin__.java.orig	Sun Jan  9 22:33:46 2005
--- __builtin__.java	Sun Jan  9 22:28:40 2005
***************
*** 45,50 ****
--- 45,52 ----
              return __builtin__.tuple(arg1);
          case 11:
              return Py.newInteger(__builtin__.id(arg1));
+         case 12:
+             return Py.newBoolean(__builtin__.bool(arg1));
          default:
              throw argCountError(1);
          }
***************
*** 138,143 ****
--- 140,146 ----
          dict.__setitem__("isinstance",
                                    new BuiltinFunctions("isinstance", 10, 2));
          dict.__setitem__("id", new BuiltinFunctions("id", 11, 1));
+         dict.__setitem__("bool", new BuiltinFunctions("bool", 12, 1));
          dict.__setitem__("__import__", new ImportFunction());
  
          dict.__delitem__("execfile_flags"); // -execfile_flags
***************
*** 178,183 ****
--- 181,200 ----
          }
      }
  
+     public static boolean bool(PyObject o) {
+         boolean res;
+         
+         if(o == Py.None)
+             res = false;
+         else if(o.isNumberType())
+             res = o.__nonzero__();
+         else if(o.isMappingType() || o.isSequenceType())
+             res = o.__len__() > 0;
+         else
+             res = true;
+         return res;
+     }
+ 
      public static boolean callable(PyObject o) {
          return o.__findattr__("__call__") != null;
      }