SyntaxWarning: invalid escape sequence '\-'

[variolam]

When using milvus-lite I get an ugly SyntaxWarning on Python 3.12.4:

.venv/lib/python3.12/site-packages/milvus_lite/server.py:51: SyntaxWarning: invalid escape sequence '\-'

  raise RuntimeError(f"Unsupport db name {self._db_file.name}, the name must match ^[a-zA-Z0-9.\-_]+$")

Because your server implementation does not use a raw-string Python will throw this warning since Python 3.12+.

Versions < Python 3.12 resulted in a DeprecationWarning (see here), which probably were filtered by your pytest.ini

A fix would be to either use a raw-string in combination with your f-string, like

raise RuntimeError(rf"Unsupport db name {self._db_file.name}, the name must match ^[a-zA-Z0-9.\-_]+$")

or escape the backslash, like

raise RuntimeError(rf"Unsupport db name {self._db_file.name}, the name must match ^[a-zA-Z0-9.\\-_]+$")

Enviornment Details

• Hardware/Software (OS, CPU, GPU, Memory): MacOS Sequioa 15.2, M3
• Method of installation (Docker, or from source): Pip
• Milvus-Lite version: 2.4.11
• Method of usage: via pymilvus:

from pymilvus import MilvusClient

client = MilvusClient("./milvus_demo.db")