diff options
Diffstat (limited to 'Lib/traceback.py')
| -rw-r--r-- | Lib/traceback.py | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/Lib/traceback.py b/Lib/traceback.py index 0ac181923d..f7705cdabc 100644 --- a/Lib/traceback.py +++ b/Lib/traceback.py @@ -348,11 +348,17 @@ class StackSummary(list): This method supports the older Python API. Each tuple should be a 4-tuple with (filename, lineno, name, line) elements. """ - if isinstance(a_list, StackSummary): - return StackSummary(a_list) + # While doing a fast-path check for isinstance(a_list, StackSummary) is + # appealing, idlelib.run.cleanup_traceback and other similar code may + # break this by making arbitrary frames plain tuples, so we need to + # check on a frame by frame basis. result = StackSummary() - for filename, lineno, name, line in a_list: - result.append(FrameSummary(filename, lineno, name, line=line)) + for frame in a_list: + if isinstance(frame, FrameSummary): + result.append(frame) + else: + filename, lineno, name, line = frame + result.append(FrameSummary(filename, lineno, name, line=line)) return result def format(self): |