[ax_interface]: Fix Python 3.13 SyntaxWarning invalid escape sequence in socket_io.py - #387
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… in socket_io.py
Replace re.compile("^agentxsocket\s+(.*)$") with raw string
re.compile(r"^agentxsocket\s+(.*)$") at line 38.
In Python 3.12+, '\s' in a non-raw string raises SyntaxWarning.
Tested on sonic-vs (SONiC master 1658c9049):
Before: SyntaxWarning logged at snmp container startup from ax_interface/socket_io.py:38
After: show logging | grep SyntaxWarning | wc -l → 0
Signed-off-by: Karthik Babu Harichandra Babu <karthikbabu@celestica.com>
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- What I did
Fixed Python 3.12+
SyntaxWarning: invalid escape sequence '\s'insrc/ax_interface/socket_io.pyby adding raw string prefix (r"...") to the regex pattern.- How I did it
The regex
re.compile("^agentxsocket\s+(.*)$", re.IGNORECASE)uses\sin a non-raw string. Python 3.12+ raises SyntaxWarning for invalid escape sequences in non-raw strings. Usingr"..."raw string prefix is the standard fix — it tells Python to treat backslashes literally, which is the correct behavior for regex patterns.- How to verify it
Verified on community SONiC VS image (x86_64-kvm_x86_64-r0):
BEFORE:
2026 Aug 20 05:39:33.913162 sonic INFO snmp#supervisord: snmp-subagent /usr/local/lib/python3.13/dist-packages/ax_interface/socket_io.py:38: SyntaxWarning: invalid escape sequence '\s'
AFTER:
admin@sonic:
$ show logging | grep "SyntaxWarning" | wc -l$ show logging | grep "SyntaxWarning"0
admin@sonic:
admin@sonic:~$
- Which release branch to backport (provide reason below if selected)
Tracking issue/work item for backport/cherry-pick request (GitHub issue or Microsoft ADO):
Failure type:
- Tested branch
- Test result
master: SONiC.master.0-dirty-20260820.165606 - SyntaxWarning absent after fix (verified on sonic-vs)
- Description for the changelog
Fix Python 3.13 SyntaxWarning invalid escape sequence '\s' in ax_interface/socket_io.py