gh-119555: catch SyntaxError from compile() in the InteractiveColoredConsole (#119557)

Lib/_pyrepl/simple_interact.py

@@ -101,7 +101,7 @@ class InteractiveColoredConsole(code.InteractiveConsole):
             item = wrapper([stmt])
             try:
                 code = compile(item, filename, the_symbol, dont_inherit=True)
-            except (OverflowError, ValueError):
+            except (OverflowError, ValueError, SyntaxError):
                     self.showsyntaxerror(filename)
                     return False
 

Lib/test/test_pyrepl/test_interact.py

@@ -94,6 +94,14 @@ class TestSimpleInteract(unittest.TestCase):
         with patch.object(console, "showsyntaxerror") as mock_showsyntaxerror:
             console.runsource(source)
             mock_showsyntaxerror.assert_called_once()
+        source = dedent("""\
+        match 1:
+            case {0: _, 0j: _}:
+                pass
+        """)
+        with patch.object(console, "showsyntaxerror") as mock_showsyntaxerror:
+            console.runsource(source)
+            mock_showsyntaxerror.assert_called_once()
 
     def test_no_active_future(self):
         console = InteractiveColoredConsole()

Misc/NEWS.d/next/Library/2024-05-25-20-15-26.gh-issue-119555.mvHbEL.rst

@@ -0,0 +1,2 @@
+Catch :exc:`SyntaxError` from :func:`compile` in the runsource() method of
+the InteractiveColoredConsole.  Patch by Sergey B Kirpichev.