diff -r d08d1569aa04 Lib/subprocess.py
--- a/Lib/subprocess.py	Wed Jul 23 14:40:27 2014 -0500
+++ b/Lib/subprocess.py	Thu Jul 24 10:29:00 2014 -0500
@@ -356,8 +356,6 @@
 """
 
 import sys
-mswindows = (sys.platform == "win32")
-
 import io
 import os
 import time
@@ -369,6 +367,16 @@
     from time import monotonic as _time
 except ImportError:
     from time import time as _time
+try:
+    import threading
+except ImportError:
+    import dummy_threading as threading
+try:
+    import msvcrt
+    import _winapi
+    mswindows = True
+except ImportError:
+    mswindows = False
 
 # Exception classes used by this module.
 class SubprocessError(Exception): pass
@@ -401,40 +409,6 @@
         return ("Command '%s' timed out after %s seconds" %
                 (self.cmd, self.timeout))
 
-
-if mswindows:
-    import threading
-    import msvcrt
-    import _winapi
-    class STARTUPINFO:
-        dwFlags = 0
-        hStdInput = None
-        hStdOutput = None
-        hStdError = None
-        wShowWindow = 0
-else:
-    import _posixsubprocess
-    import select
-    import selectors
-    try:
-        import threading
-    except ImportError:
-        import dummy_threading as threading
-
-    # When select or poll has indicated that the file is writable,
-    # we can write up to _PIPE_BUF bytes without risk of blocking.
-    # POSIX defines PIPE_BUF as >= 512.
-    _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
-
-    # poll/select have the advantage of not requiring any extra file
-    # descriptor, contrarily to epoll/kqueue (also, they require a single
-    # syscall).
-    if hasattr(selectors, 'PollSelector'):
-        _PopenSelector = selectors.PollSelector
-    else:
-        _PopenSelector = selectors.SelectSelector
-
-
 __all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call", "getstatusoutput",
            "getoutput", "check_output", "CalledProcessError", "DEVNULL"]
 
@@ -449,6 +423,13 @@
                     "STD_ERROR_HANDLE", "SW_HIDE",
                     "STARTF_USESTDHANDLES", "STARTF_USESHOWWINDOW"])
 
+    class STARTUPINFO:
+        dwFlags = 0
+        hStdInput = None
+        hStdOutput = None
+        hStdError = None
+        wShowWindow = 0
+
     class Handle(int):
         closed = False
 
@@ -468,6 +449,23 @@
 
         __del__ = Close
         __str__ = __repr__
+else:
+    import _posixsubprocess
+    import select
+    import selectors
+
+    # When select or poll has indicated that the file is writable,
+    # we can write up to _PIPE_BUF bytes without risk of blocking.
+    # POSIX defines PIPE_BUF as >= 512.
+    _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
+
+    # poll/select have the advantage of not requiring any extra file
+    # descriptor, contrarily to epoll/kqueue (also, they require a single
+    # syscall).
+    if hasattr(selectors, 'PollSelector'):
+        _PopenSelector = selectors.PollSelector
+    else:
+        _PopenSelector = selectors.SelectSelector
 
 
 # This lists holds Popen instances for which the underlying process had not