Issue 12983: byte string literals with invalid hex escape codes raise ValueError instead of SyntaxError (original) (raw)

Issue12983

Created on 2011-09-14 22:51 by ned.deily, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (5)
msg144059 - (view)	Author: Ned Deily (ned.deily) *	Date: 2011-09-14 22:51
In behavior carried over from Python 2 string literals, Python 3 byte string literals raise a less helpful ValueError exception when an invalid hex escape code is given: >>> x = b'\x0' ValueError: invalid \x escape A string literal raises a SyntaxError and a full traceback including line number: >>> x = '\x0' File "", line 1 SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 0-2: end of string in escape sequence
msg180054 - (view)	Author: Serhiy Storchaka (serhiy.storchaka) *	Date: 2013-01-15 21:37
Here is a patch which include position number in the invalid bytes exception, wrap it into SyntaxError, and adds tests for bytes and strings.
msg181431 - (view)	Author: Serhiy Storchaka (serhiy.storchaka) *	Date: 2013-02-05 12:56
Ping.
msg181812 - (view)	Author: Benjamin Peterson (benjamin.peterson) *	Date: 2013-02-10 15:18
LGTM
msg181815 - (view)	Author: Roundup Robot (python-dev)	Date: 2013-02-10 15:45
New changeset 305210a08fc9 by Serhiy Storchaka in branch '3.2': Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError http://hg.python.org/cpython/rev/305210a08fc9 New changeset d5b731446a91 by Serhiy Storchaka in branch '3.3': Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError http://hg.python.org/cpython/rev/d5b731446a91 New changeset fe410292cba6 by Serhiy Storchaka in branch 'default': Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError http://hg.python.org/cpython/rev/fe410292cba6