gh-94352: shlex.split() no longer accepts None (#94353)

shlex.split(): Passing None for s argument now raises an exception,
rather than reading sys.stdin. The feature was deprecated in Python
3.9.

2 files changed, 3 insertions, 6 deletions

diff --git a/Lib/shlex.py b/Lib/shlex.py
index 4801a6c..a91c9b0 100644
--- a/Lib/shlex.py
+++ b/Lib/shlex.py
@@ -305,9 +305,7 @@ class shlex:
 def split(s, comments=False, posix=True):
     """Split the string *s* using shell-like syntax."""
     if s is None:
-        import warnings
-        warnings.warn("Passing None for 's' to shlex.split() is deprecated.",
-                      DeprecationWarning, stacklevel=2)
+        raise ValueError("s argument must not be None")
     lex = shlex(s, posix=posix)
     lex.whitespace_split = True
     if not comments:
diff --git a/Lib/test/test_shlex.py b/Lib/test/test_shlex.py
index 3081a78..92598db 100644
--- a/Lib/test/test_shlex.py
+++ b/Lib/test/test_shlex.py
@@ -162,9 +162,8 @@ class ShlexTest(unittest.TestCase):
             tok = lex.get_token()
         return ret
 
-    @mock.patch('sys.stdin', io.StringIO())
-    def testSplitNoneDeprecation(self):
-        with self.assertWarns(DeprecationWarning):
+    def testSplitNone(self):
+        with self.assertRaises(ValueError):
             shlex.split(None)
 
     def testSplitPosix(self):