bpo-43933: Show frame.f_lineno as None, rather than -1, if there is no line number. (GH-25717)
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index 590935c..3810108 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -2081,7 +2081,10 @@ def lineno_after_raise(self, f, line):
while t.tb_next:
t = t.tb_next
frame = t.tb_frame
- self.assertEqual(frame.f_lineno-frame.f_code.co_firstlineno, line)
+ if line is None:
+ self.assertEqual(frame.f_lineno, line)
+ else:
+ self.assertEqual(frame.f_lineno-frame.f_code.co_firstlineno, line)
def test_lineno_after_raise_simple(self):
def simple():
@@ -2153,6 +2156,12 @@ def after_with():
pass
self.lineno_after_raise(after_with, 2)
+ def test_missing_lineno_shows_as_none(self):
+ def f():
+ 1/0
+ self.lineno_after_raise(f, 1)
+ f.__code__ = f.__code__.replace(co_linetable=b'\x04\x80\xff\x80')
+ self.lineno_after_raise(f, None)
if __name__ == '__main__':
unittest.main()