jsell-rh opened a new issue, #2268:
URL: https://github.com/apache/age/issues/2268
**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?**
```python
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:
```python
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:
```python
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](https://bugs.python.org/issue27364) - Python 3.6 introduced
DeprecationWarning for invalid escape sequences
- [Python 3.12 What's New](https://docs.python.org/3/whatsnew/3.12.html) -
Upgraded to SyntaxWarning in 3.12
- Python 3.14+ will likely make this a hard SyntaxError
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