[Python-checkins] bpo-43950: support long lines in traceback.py (GH-27336)
isidentical
webhook-mailer at python.org
Sat Jul 24 13:50:44 EDT 2021
https://github.com/python/cpython/commit/4f5980a4f57dab68b9137304f58bd08891d43d5a
commit: 4f5980a4f57dab68b9137304f58bd08891d43d5a
branch: main
author: Batuhan Taskaya <batuhan at python.org>
committer: isidentical <isidentical at gmail.com>
date: 2021-07-24T20:50:39+03:00
summary:
bpo-43950: support long lines in traceback.py (GH-27336)
files:
M Lib/test/test_traceback.py
M Lib/traceback.py
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index c87ce7245335a..5fc5b5926d5a6 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -510,6 +510,28 @@ def test_traceback_specialization_with_syntax_error(self):
)
self.assertEqual(result_lines, expected_error.splitlines())
+ def test_traceback_very_long_line(self):
+ source = "a" * 256
+ bytecode = compile(source, TESTFN, "exec")
+
+ with open(TESTFN, "w") as file:
+ file.write(source)
+ self.addCleanup(unlink, TESTFN)
+
+ func = partial(exec, bytecode)
+ result_lines = self.get_exception(func)
+
+ lineno_f = bytecode.co_firstlineno
+ expected_error = (
+ 'Traceback (most recent call last):\n'
+ f' File "{__file__}", line {self.callable_line}, in get_exception\n'
+ ' callable()\n'
+ ' ^^^^^^^^^^\n'
+ f' File "{TESTFN}", line {lineno_f}, in <module>\n'
+ f' {source}\n'
+ )
+ self.assertEqual(result_lines, expected_error.splitlines())
+
def assertSpecialized(self, func, expected_specialization):
result_lines = self.get_exception(func)
specialization_line = result_lines[-1]
diff --git a/Lib/traceback.py b/Lib/traceback.py
index ae5775d2f3bda..15bdb3c8c2e65 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -462,7 +462,11 @@ def format_frame(self, frame):
row.append(' {}\n'.format(frame.line.strip()))
stripped_characters = len(frame._original_line) - len(frame.line.lstrip())
- if frame.end_lineno == frame.lineno and frame.end_colno != 0:
+ if (
+ frame.end_lineno == frame.lineno
+ and frame.colno is not None
+ and frame.end_colno is not None
+ ):
colno = _byte_offset_to_character_offset(frame._original_line, frame.colno)
end_colno = _byte_offset_to_character_offset(frame._original_line, frame.end_colno)
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