SyntaxWarning: invalid escape sequence '\$'

[ilf]

Python 3.12 produces this error:

Error output from fritzbox_traffic.py:
    /etc/munin/plugins/fritzbox_traffic.py:57: SyntaxWarning: invalid escape sequence '\$'
      print("graph_vlabel bits in (-) / out (+) per \${graph_period}")

That's this line:

print("graph_vlabel bits in (-) / out (+) per \${graph_period}")

https://github.com/Tafkas/fritzbox-munin/blob/master/fritzbox_traffic.py#L57

Python changed this:

Changed in version 3.11: Octal escapes with value larger than 0o377 produce a DeprecationWarning.

Changed in version 3.12: Octal escapes with value larger than 0o377 produce a SyntaxWarning. In a future Python version they will be eventually a SyntaxError.

https://docs.python.org/3/reference/lexical_analysis.html#escape-sequences

Seems like \$ should be changed.
Probably to $ or \\$.or something like that.
I'm not a Python expert, so I can't write a PR.