jsell-rh opened a new pull request, #2267:
URL: https://github.com/apache/age/pull/2267
## Problem
When using apache-age-python with Python 3.6+, a SyntaxWarning is raised:
```
SyntaxWarning: invalid escape sequence '\s'
WHITESPACE = re.compile('\s')
```
This warning occurs because `\s` is not a valid Python string escape
sequence. While it currently works (Python interprets unrecognized escape
sequences as literal backslash + character), this behavior is deprecated.
## Solution
Use a raw string literal (`r'\s'`) to properly declare the regex pattern.
Raw strings treat backslashes as literal characters, which is the correct way
to define regex patterns in Python.
## Changes
**File:** `age/age.py`
- Line 28: Changed `WHITESPACE = re.compile('\s')` to `WHITESPACE =
re.compile(r'\s')`
## Testing
- ✅ Existing functionality unchanged (regex pattern behaves identically)
- ✅ Warning eliminated when running with Python 3.12+
- ✅ Forward compatible with Python 3.14+
## References
- [PEP 701](https://peps.python.org/pep-0701/) - Python 3.12 enhanced error
messages
- [Python Docs: String
Literals](https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals)
- [Why does Python log a DeprecationWarning saying "invalid escape
sequence"?](https://adamj.eu/tech/2022/11/04/why-does-python-deprecationwarning-invalid-escape-sequence/)
- [bpo-27364](https://bugs.python.org/issue27364) - Python 3.6 deprecation
of invalid escape sequences
---
**Diff:**
```diff
-WHITESPACE = re.compile('\s')
+WHITESPACE = re.compile(r'\s')
```
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