New submission from Rémy Oudompheng <[email protected]>:
When running "2to3 -f raise" on the following code, which uses an old Python
2.4 raise of a string:
def f():
raise ("message %s %s" % (1, 2))
try:
f()
finally:
pass
I obtain the following quite surprising result. I would have expected to get
either an error or leave the original file unchanged, because "raise (s)" is
syntactically valid although incorrect.
$ 2to3 -f raise w.py
RefactoringTool: Refactored w.py
--- w.py (original)
+++ w.py (refactored)
@@ -1,5 +1,5 @@
def f():
- raise ("message %s %s" % (1, 2))
+ raise "message %s %s"
try:
f()
----------
components: 2to3 (2.x to 3.x conversion tool)
messages: 368355
nosy: Rémy Oudompheng
priority: normal
severity: normal
status: open
title: 2to3 raise can silently remove code from old 2.4 string exceptions
type: behavior
versions: Python 3.7, Python 3.8
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Python tracker <[email protected]>
<https://bugs.python.org/issue40547>
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