SyntaxWarning: invalid escape sequence '\s' in Python 3.12+

[jsell-rh]

Describe the bug
The apache-age-python library triggers warnings in Python 3.6+ due to invalid escape sequences in regex patterns. In Python 3.12+, this was upgraded from a DeprecationWarning to a SyntaxWarning, and will become a hard error (SyntaxError) in Python 3.14+.

How are you accessing AGE (Command line, driver, etc.)?

• Python driver (apache-age-python version 0.0.7)

What data setup do we need to do?
None - this warning occurs during module import and basic connection setup.

What is the necessary configuration info needed?

• Python 3.6+ (warning becomes more visible in Python 3.12+)
• apache-age-python 0.0.7

What is the command that caused the error?

import age
import psycopg2

# Warning appears during import or when using the library
conn = psycopg2.connect(...)
age.setUpAge(conn, "test_graph")

Warning output:

Python 3.6-3.11:

DeprecationWarning: invalid escape sequence '\s'
  WHITESPACE = re.compile('\s')

Python 3.12+:

SyntaxWarning: invalid escape sequence '\s'
  WHITESPACE = re.compile('\s')

Expected behavior
No warnings should be emitted. Regex patterns should use raw string literals (r'\s') to properly declare escape sequences.

Root Cause
In age/age.py line 28, the code uses:

WHITESPACE = re.compile('\s')

The \s is not a valid Python string escape sequence. While it currently works because Python interprets unrecognized escape sequences as literal characters, this behavior is deprecated.

Proposed Fix (#2267)
Change line 28 to use a raw string:

WHITESPACE = re.compile(r'\s')

This is backwards compatible and eliminates the warning across all Python versions.

Environment (please complete the following information):

• apache-age-python Version: 0.0.7
• Python Version: 3.12+ (but affects 3.6+)
• PostgreSQL + AGE: Any version

Additional context

• bpo-27364 - Python 3.6 introduced DeprecationWarning for invalid escape sequences
• Python 3.12 What's New - Upgraded to SyntaxWarning in 3.12
• Python 3.14+ will likely make this a hard SyntaxError