Index: PyFile.java
===================================================================
RCS file: /cvsroot/jython/jython/org/python/core/PyFile.java,v
retrieving revision 2.29
diff -u -r2.29 PyFile.java
--- PyFile.java	6 Aug 2003 11:46:26 -0000	2.29
+++ PyFile.java	27 Feb 2004 21:06:31 -0000
@@ -733,14 +733,24 @@
                     c3 = mode.charAt(2);
             }
         }
+        
         String jmode = "r";
         if (c1 == 'r') {
-            if (c2 == '+' || c3 == '+') jmode = "rw";
-            else jmode = "r";
+            if (c2 == '+' || c3 == '+') 
+            	jmode = "rw";
+            else
+            	jmode = "r";
         }
-        else if (c1 == 'w' || c1 == 'a') jmode = "rw";
+        else if (c1 == 'w' || c1 == 'a')
+        	jmode = "rw";
+        	
         try {
-            java.io.File f = new java.io.File(name);
+			java.io.File f = new java.io.File(name);
+			if (c1 == 'r') {
+				if (!f.exists()) {
+					throw new java.io.IOException("No such file or directory: " + name);
+				}
+			}
             if (c1 == 'w') {
                 // Hack to truncate the file without deleting it:
                 // create a FileOutputStream for it and close it again.