diff --git a/setuptools/sandbox.py b/setuptools/sandbox.py
index 7634b1320b..859e37e8bc 100644
--- a/setuptools/sandbox.py
+++ b/setuptools/sandbox.py
@@ -263,6 +263,52 @@ def run_setup(setup_script, args):
             # Normal exit, just return
 
 
+def _mk_dual_path_wrapper(name):
+    original = getattr(_os, name)
+
+    def wrap(self, src, dst, *args, **kw):
+        if self._active:
+            src, dst = self._remap_pair(name, src, dst, *args, **kw)
+        return original(src, dst, *args, **kw)
+
+    return wrap
+
+
+def _mk_single_path_wrapper(name, original=None):
+    original = original or getattr(_os, name)
+
+    def wrap(self, path, *args, **kw):
+        if self._active:
+            path = self._remap_input(name, path, *args, **kw)
+        return original(path, *args, **kw)
+
+    return wrap
+
+
+def _mk_single_with_return(name):
+    original = getattr(_os, name)
+
+    def wrap(self, path, *args, **kw):
+        if self._active:
+            path = self._remap_input(name, path, *args, **kw)
+            return self._remap_output(name, original(path, *args, **kw))
+        return original(path, *args, **kw)
+
+    return wrap
+
+
+def _mk_query(name):
+    original = getattr(_os, name)
+
+    def wrap(self, *args, **kw):
+        retval = original(*args, **kw)
+        if self._active:
+            return self._remap_output(name, retval)
+        return retval
+
+    return wrap
+
+
 class AbstractSandbox:
     """Wrap 'os' module and 'open()' builtin for virtualizing setup scripts"""
 
@@ -298,30 +344,10 @@ def run(self, func):
         with self:
             return func()
 
-    def _mk_dual_path_wrapper(name):
-        original = getattr(_os, name)
-
-        def wrap(self, src, dst, *args, **kw):
-            if self._active:
-                src, dst = self._remap_pair(name, src, dst, *args, **kw)
-            return original(src, dst, *args, **kw)
-
-        return wrap
-
     for name in ["rename", "link", "symlink"]:
         if hasattr(_os, name):
             locals()[name] = _mk_dual_path_wrapper(name)
 
-    def _mk_single_path_wrapper(name, original=None):
-        original = original or getattr(_os, name)
-
-        def wrap(self, path, *args, **kw):
-            if self._active:
-                path = self._remap_input(name, path, *args, **kw)
-            return original(path, *args, **kw)
-
-        return wrap
-
     if _file:
         _file = _mk_single_path_wrapper('file', _file)
     _open = _mk_single_path_wrapper('open', _open)
@@ -348,33 +374,10 @@ def wrap(self, path, *args, **kw):
     ]:
         if hasattr(_os, name):
             locals()[name] = _mk_single_path_wrapper(name)
-
-    def _mk_single_with_return(name):
-        original = getattr(_os, name)
-
-        def wrap(self, path, *args, **kw):
-            if self._active:
-                path = self._remap_input(name, path, *args, **kw)
-                return self._remap_output(name, original(path, *args, **kw))
-            return original(path, *args, **kw)
-
-        return wrap
-
     for name in ['readlink', 'tempnam']:
         if hasattr(_os, name):
             locals()[name] = _mk_single_with_return(name)
 
-    def _mk_query(name):
-        original = getattr(_os, name)
-
-        def wrap(self, *args, **kw):
-            retval = original(*args, **kw)
-            if self._active:
-                return self._remap_output(name, retval)
-            return retval
-
-        return wrap
-
     for name in ['getcwd', 'tmpnam']:
         if hasattr(_os, name):
             locals()[name] = _mk_query(name)