Python implicit boolean conversion in logical operations bypasses try/except on 3.14.0rc1 #137288
Description
Bug report
Bug description:
Throwing an exception during an implicit cast to a boolean as part of a logical operation (or, and) bypasses surrounding try/except statements.
The following example works on Python 3.12.3 but fails on Python 3.14.0rc1:
Example:
class Foo:
def __bool__(self):
raise NotImplementedError()
a = Foo()
b = Foo()
# Works
try:
c = bool(a)
except:
print("passed c = bool(a)")
# Fails
try:
c = a or b
except:
print("passed c = a or b")Output on Python 3.12.3 (expected behavior):
passed c = bool(a)
passed c = a or b
Output on Python 3.14.0rc1:
passed c = bool(a)
Traceback (most recent call last):
File "/Users/justinfu/code/test_bool.py", line 15, in <module>
c = a or b
^^^^^^
File "/Users/justinfu/code/test_bool.py", line 3, in __bool__
raise NotImplementedError()
NotImplementedErrorCPython versions tested on:
3.14
Operating systems tested on:
macOS