bpo-34463: Make python tracebacks identical to C tracebacks for SyntaxErrors without a lineno (GH-23427)
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 5df701c..abb5762 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -687,6 +687,31 @@ def e():
msg = self.get_report(e).splitlines()
self.assertEqual(msg[-2], ' ^')
+ def test_syntax_error_no_lineno(self):
+ # See #34463.
+
+ # Without filename
+ e = SyntaxError('bad syntax')
+ msg = self.get_report(e).splitlines()
+ self.assertEqual(msg,
+ ['SyntaxError: bad syntax'])
+ e.lineno = 100
+ msg = self.get_report(e).splitlines()
+ self.assertEqual(msg,
+ [' File "<string>", line 100', 'SyntaxError: bad syntax'])
+
+ # With filename
+ e = SyntaxError('bad syntax')
+ e.filename = 'myfile.py'
+
+ msg = self.get_report(e).splitlines()
+ self.assertEqual(msg,
+ ['SyntaxError: bad syntax (myfile.py)'])
+ e.lineno = 100
+ msg = self.get_report(e).splitlines()
+ self.assertEqual(msg,
+ [' File "myfile.py", line 100', 'SyntaxError: bad syntax'])
+
def test_message_none(self):
# A message that looks like "None" should not be treated specially
err = self.get_report(Exception(None))