From 74510e2a57f6d4b51ac1ab4f778cd7a4c54b541e Mon Sep 17 00:00:00 2001
From: Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de>
Date: Thu, 28 Mar 2019 22:47:18 +0100
Subject: bpo-30427: eliminate redundant type checks in os.path.normcase()
 (GH-1712)

https://bugs.python.org/issue30427
---
 Lib/posixpath.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

(limited to 'Lib/posixpath.py')

diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 12ab2eadbf..21ce72fd79 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -51,11 +51,7 @@ def _get_sep(path):
 
 def normcase(s):
     """Normalize case of pathname.  Has no effect under Posix"""
-    s = os.fspath(s)
-    if not isinstance(s, (bytes, str)):
-        raise TypeError("normcase() argument must be str or bytes, "
-                        "not '{}'".format(s.__class__.__name__))
-    return s
+    return os.fspath(s)
 
 
 # Return whether a path is absolute.
-- 
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