Noble debdiff
** Description changed:
+ [ Impact ]
+
+ The jc package in Noble (1.25.1-1) shows three syntax warnings when installing
+ the package via 'apt install' [0]. These warnings occur because Python 3.12,
+ which ships with Noble, strictly flags invalid backslash escape sequences in
+ standard string literals, which will become hard syntax errors in future
Python
+ releases. [1]
+
+ The fix resolves the issue by prepending an 'r' to the affected string
literals
+ in jc/utils.py and jc/parsers/dir.py, turning them into raw strings. This fix
+ has already been accepted upstream in version 1.25.2 [2].
+
+ [ Test Plan ]
+
+ The test can be performed in a standard Ubuntu Noble environment using a LXD
+ container.
+
+ ** Set Up Testing Environment **
+
+ 1. Create a Noble LXD container:
+ $ lxc launch ubuntu:noble jc-test
+ $ lxc shell jc-test
+
+ ** Verify the Bug **
+
+ 2. Install the current version of jc:
+ $ sudo apt update && sudo apt install -y jc
+
+ 3. Confirm the warnings:
+ Setting up jc (1.25.1-1) ...
+ /usr/lib/python3/dist-packages/jc/parsers/dir.py:1: SyntaxWarning: invalid
escape sequence '\>'
+ """jc - JSON Convert `dir` command output parser
+ /usr/lib/python3/dist-packages/jc/utils.py:213: SyntaxWarning: invalid
escape sequence '\]'
+ """
+ /usr/lib/python3/dist-packages/jc/utils.py:232: SyntaxWarning: invalid
escape sequence '\]'
+ special = '''!"#$%&'()*+,-./:;<=>?@[\]^`{|}~ '''
+
+ ** Verify the Fix **
+
+ 4. Clean up previous installation:
+ $ sudo apt remove --purge -y jc
+
+ 5. Enable proposed and install patched jc:
+ $ sudo apt update && sudo apt install -y jc
+
+ 6. Confirm the fix:
+ Verify the terminal output does not contain any SyntaxWarning messages
+
+ [ Where Problems Could Occur ]
+
+ If a typo was introduced while prepending the raw string indicators (e.g.,
+ modifying the string boundaries or unintentionally altering characters inside
+ the string literals), the parser for the dir command or the normalize_key
+ function could process data incorrectly.
+
+ This would show up as failures or malformed JSON output when users attempt to
+ parse the dir command, or as incorrect key naming when processing fields that
+ contain special characters like brackets or backslashes.
+
+ [ Other Info ]
+
+ Since the syntax warnings were introduced in Python 3.12, Jammy is not
affected
+ by this bug as it ships with Python 3.10.
+
+ Packages in Questing and later releases already have the fix.
+
+ [0] - https://github.com/kellyjonbrazil/jc/issues/647
+ [1] - https://docs.python.org/3/whatsnew/3.12.html#other-language-changes
+ [2] -
https://github.com/kellyjonbrazil/jc/commit/50638cc11ed0eeb48b3c522102ebc574499c4e97
+
+ Original Description: Find the original description of the bug below:
+
The following messages are generated the jc package is installed on
Noble:
/usr/lib/python3/dist-packages/jc/parsers/dir.py:1: SyntaxWarning: invalid
escape sequence '\>'
- """jc - JSON Convert `dir` command output parser
+ """jc - JSON Convert `dir` command output parser
/usr/lib/python3/dist-packages/jc/utils.py:213: SyntaxWarning: invalid escape
sequence '\]'
- """
+ """
/usr/lib/python3/dist-packages/jc/utils.py:232: SyntaxWarning: invalid escape
sequence '\]'
- special = '''!"#$%&'()*+,-./:;<=>?@[\]^`{|}~ '''
+ special = '''!"#$%&'()*+,-./:;<=>?@[\]^`{|}~ '''
Other releases are unaffected.
** Patch added: "lp2153146-jc-noble.debdiff"
https://bugs.launchpad.net/ubuntu/+source/jc/+bug/2153146/+attachment/5971816/+files/lp2153146-jc-noble.debdiff
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https://bugs.launchpad.net/bugs/2153146
Title:
jc Package Produces SyntaxWarning Messages on Installation
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