As Finn Bock points out, _P_WAIT etc. don't have a leading underscore

gvanrossum · gvanrossum · commit fb801e7d338b · 1999-02-22T15:40:34.000Z
so they don't need to be treated specially here.
diff --git a/Lib/os.py b/Lib/os.py
@@ -42,9 +42,7 @@
     curdir = '.'; pardir = '..'; sep = '\\'; pathsep = ';'
     defpath = '.;C:\\bin'
     from nt import *
-    for i in ['_exit',
-              '_P_WAIT', '_P_NOWAIT', '_P_OVERLAY',
-              '_P_NOWAITO', '_P_DETACH']:
+    for i in ['_exit']:
         try:
             exec "from nt import " + i
         except ImportError:
