Always define getenv(), as suggested by Guido. This means that os.getenv() is...

Always define getenv(), as suggested by Guido. This means that os.getenv() is also defined for MacPython-OS9 (even though it doesn't actually do anything useful), and it shouldn't hurt on other platforms.

Lib/os.py

@@ -416,11 +416,11 @@ else:
 
     environ = _Environ(environ)
 
-    def getenv(key, default=None):
-        """Get an environment variable, return None if it doesn't exist.
-        The optional second argument can specify an alternate default."""
-        return environ.get(key, default)
-    __all__.append("getenv")
+def getenv(key, default=None):
+	"""Get an environment variable, return None if it doesn't exist.
+	The optional second argument can specify an alternate default."""
+	return environ.get(key, default)
+__all__.append("getenv")
 
 def _exists(name):
     try: