Merged revisions 77735 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r77735 | benjamin.peterson | 2010-01-24 21:31:13 -0600 (Sun, 24 Jan 2010) | 1 line

  fix an UnboundLocalError when the release file is empty #7773
........
diff --git a/Lib/platform.py b/Lib/platform.py
index 90ad93d..1852f30 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -247,6 +247,12 @@
 
 def _parse_release_file(firstline):
 
+    # Default to empty 'version' and 'id' strings.  Both defaults are used
+    # when 'firstline' is empty.  'id' defaults to empty when an id can not
+    # be deduced.
+    version = ''
+    id = ''
+
     # Parse the first line
     m = _lsb_release_version.match(firstline)
     if m is not None:
@@ -264,8 +270,6 @@
         version = l[0]
         if len(l) > 1:
             id = l[1]
-        else:
-            id = ''
     return '', version, id
 
 def _test_parse_release_file():