tracking python idle changes:

Provisional fix for writefile() [SF bug # 541730]

Lib/idlelib/IOBinding.py

@@ -178,7 +178,7 @@ class IOBinding:
         self.fixlastline()
         try:
             f = open(filename, "w")
-            chars = self.text.get("1.0", "end-1c")
+            chars = str(self.text.get("1.0", "end-1c"))
             f.write(chars)
             f.close()
             ## print "saved to", `filename`