[New-bugs-announce] [issue47099] Replace with_traceback() with exception chaining and reraising
Oleg Iarygin
report at bugs.python.org
Wed Mar 23 06:42:51 EDT 2022
New submission from Oleg Iarygin <oleg at arhadthedev.net>:
Currently, exception chaining in Lib/ modules is implemented with pre-3.11 `raise Foo(...).with_traceback(sys.exc_info()[2])`. However, this approach can be simplified:
1. PEP 3134 introduced a proper `raise Foo(...) from bar` construction that takes a parent exception instead of its stack traceback
2. Without the traceback required, we partially get rid of `sys.exc_info` thus reducing active tapping into global internals
A report printed into a console remains the same except a line:
> During handling of the above exception, another exception occurred
replaced with:
> The above exception was the direct cause of the following exception
----------
components: Library (Lib)
messages: 415864
nosy: arhadthedev
priority: normal
severity: normal
status: open
title: Replace with_traceback() with exception chaining and reraising
type: enhancement
versions: Python 3.11
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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue47099>
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