Backout a1a05e2724dd: shutil.which(bytes) is a new feature and my patch does not work on Windows

1 files changed, 8 insertions, 15 deletions

diff --git a/Lib/shutil.py b/Lib/shutil.py
index c80a5cc..502bb67 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -1065,13 +1065,6 @@ def get_terminal_size(fallback=(80, 24)):
 
     return os.terminal_size((columns, lines))
 
-# Check that a given file can be accessed with the correct mode.
-# Additionally check that `file` is not a directory, as on Windows
-# directories pass the os.access check.
-def _access_check(fn, mode):
-    return (os.path.exists(fn) and os.access(fn, mode)
-            and not os.path.isdir(fn))
-
 def which(cmd, mode=os.F_OK | os.X_OK, path=None):
     """Given a command, mode, and a PATH string, return the path which
     conforms to the given mode on the PATH, or None if there is no such
@@ -1082,6 +1075,13 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
     path.
 
     """
+    # Check that a given file can be accessed with the correct mode.
+    # Additionally check that `file` is not a directory, as on Windows
+    # directories pass the os.access check.
+    def _access_check(fn, mode):
+        return (os.path.exists(fn) and os.access(fn, mode)
+                and not os.path.isdir(fn))
+
     # If we're given a path with a directory part, look it up directly rather
     # than referring to PATH directories. This includes checking relative to the
     # current directory, e.g. ./script
@@ -1094,12 +1094,7 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
         path = os.environ.get("PATH", os.defpath)
     if not path:
         return None
-    if isinstance(cmd, bytes):
-        path = os.fsencode(path)
-        path = path.split(os.fsencode(os.pathsep))
-    else:
-        path = os.fsdecode(path)
-        path = path.split(os.pathsep)
+    path = path.split(os.pathsep)
 
     if sys.platform == "win32":
         # The current directory takes precedence on Windows.
@@ -1108,8 +1103,6 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
 
         # PATHEXT is necessary to check on Windows.
         pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
-        if isinstance(cmd, bytes):
-            pathext = map(os.fsencode, pathext)
         # See if the given file matches any of the expected path extensions.
         # This will allow us to short circuit when given "python.exe".
         # If it does match, only test that one, otherwise we have to try