Closed as not planned
Description
Bug report
I think the change below breaks backwards compatibility,
91e9379#diff-96634ca56022c201d0ff677e922810a97e4ad8a55de53258cf0cbc22bd7c9be1R133
Specifically, usage of traceback.format_exception_only() that conforms to Python 3.10 signature, cannot be used on Python 3.8. Even if the argument value is provided.
A reproducible example would be:
import sys
import traceback
# Works on Python 3.8
try:
raise Exception("test exception, pass")
except Exception as exc:
exception_type, exception_value, _ = sys.exc_info()
print(traceback.format_exception_only(exception_type, exception_value))
# Raises exception on Pyhton 3.8
try:
raise Exception("test exception, fail")
except Exception as exc:
_, exception_value, _ = sys.exc_info()
print(traceback.format_exception_only(exc, exception_value))
Your environment
-
CPython versions tested on:
Python 3.8.10 -
Operating system and architecture:
Ubuntu 20.04.5 LTS, x86_64