New submission from Serhiy Storchaka <storchaka+cpyt...@gmail.com>:
bytes() and bytearray() replace some unexpected exceptions (including
MemoryError and KeyboardInterrupt) with TypeError.
1) Exception in __index__.
class X:
def __index__(self):
raise MemoryError
`bytes(X())` results in:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: cannot convert 'X' object to bytes
`bytearray(X())` results in:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'X' object is not iterable
This is related to issue29159.
2) Exception in __iter__.
class X:
def __iter__(self):
raise MemoryError
`bytes(X())` results in:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: cannot convert 'X' object to bytes
`bytearray(X())` works correctly (raises a MemoryError).
The proper solution is to replace just a TypeError and allow other exceptions
to emerge.
----------
assignee: serhiy.storchaka
components: Interpreter Core
messages: 327661
nosy: belopolsky, inada.naoki, serhiy.storchaka
priority: normal
severity: normal
status: open
title: bytes and bytearray constructors replace unexpected exceptions
type: behavior
versions: Python 3.6, Python 3.7, Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34974>
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