Have os.environ inherit from the iterable version of UserDict.

Closes SF bug 605731.

diff --git a/Lib/os.py b/Lib/os.py
index b9969c708f90073d3a3134fcb7d39ebd767ef05a..a89c471fc60fee30e4fc9000412ad19fa6ac5012 100644 (file)
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -366,7 +366,7 @@ else:
         from riscosenviron import _Environ
     elif name in ('os2', 'nt', 'dos'):  # Where Env Var Names Must Be UPPERCASE
         # But we store them as upper case
-        class _Environ(UserDict.UserDict):
+        class _Environ(UserDict.IterableUserDict):
             def __init__(self, environ):
                 UserDict.UserDict.__init__(self)
                 data = self.data