spark.py:122: SyntaxWarning: invalid escape sequence '\e'

Summary

@chris I am testing my updated Rust documentation. When running the rtems-tester, I am getting a warning:

ferris@0fa931a464ca:~/example-rust$ rtems-run --rtems-bsp=rv64imafdc hello_rtems_riscv.exe
/opt/rtems/6/share/rtems/tester/rt/pygdb/spark.py:122: SyntaxWarning: invalid escape sequence '\e'
  _NULLABLE = '\e_'
[...]

This happens in a newly build container with freshly cloned source-builder.git and rtems.git.

Ubuntu 24.04 LTS
Python 3.12.3
RTEMS version: 6.0.0.e74cea4172ee8564bef5f8500c5dd07512257d99
RTEMS tools: 13.2.1 20240502 (RTEMS 6, RSB 484c7a4095fe8cebba0320b58bf9477f2f40b1b6, Newlib 730703b)

The file seems to be in rtems-tool.git: tester/rt/pygdb/spark.py