bpo-30152: Reduce the number of imports for argparse. (#1269)

1 files changed, 9 insertions, 12 deletions

diff --git a/Lib/os.py b/Lib/os.py
index 807ddb5..4f9fdf5 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -23,7 +23,7 @@ and opendir), and leave all pathname manipulation to os.path
 
 #'
 import abc
-import sys, errno
+import sys
 import stat as st
 
 _names = sys.builtin_module_names
@@ -590,12 +590,10 @@ def _execvpe(file, args, env=None):
         argrest = (args,)
         env = environ
 
-    head, tail = path.split(file)
-    if head:
+    if path.dirname(file):
         exec_func(file, *argrest)
         return
-    last_exc = saved_exc = None
-    saved_tb = None
+    saved_exc = None
     path_list = get_exec_path(env)
     if name != 'nt':
         file = fsencode(file)
@@ -604,16 +602,15 @@ def _execvpe(file, args, env=None):
         fullname = path.join(dir, file)
         try:
             exec_func(fullname, *argrest)
+        except (FileNotFoundError, NotADirectoryError) as e:
+            last_exc = e
         except OSError as e:
             last_exc = e
-            tb = sys.exc_info()[2]
-            if (e.errno != errno.ENOENT and e.errno != errno.ENOTDIR
-                and saved_exc is None):
+            if saved_exc is None:
                 saved_exc = e
-                saved_tb = tb
-    if saved_exc:
-        raise saved_exc.with_traceback(saved_tb)
-    raise last_exc.with_traceback(tb)
+    if saved_exc is not None:
+        raise saved_exc
+    raise last_exc
 
 
 def get_exec_path(env=None):