Revert to use sys.stdin, sys.stdout instead of their double underscored

ywangd · ywangd · commit c6161512de7f · 2014-12-22T13:21:16.000+11:00
version, i.e. sys.__stdin__ and sys.__stdout__.

It seems Pythonista does not recognize the double underscored version
properly. No output will be displayed if they are used.
diff --git a/stash.py b/stash.py
@@ -27,9 +27,9 @@
     _IN_PYTHONISTA = False
 
 
-_STDIN = sys.__stdin__
-_STDOUT = sys.__stdout__
-_STDERR = sys.__stderr__
+_STDIN = sys.stdin
+_STDOUT = sys.stdout
+_STDERR = sys.stderr
 
 
 _DEBUG_RUNTIME = False
