Since version 0.4.0 kea-exporter no longer runs under Debian 9 with Python 3.5 because it uses f-strings for formatting text. f-strings where introduced in Python 3.6. I don't know if 3.6 is sufficient to run version 0.4.0 as I was only able to test it with 3.5 and 3.7.
Since version 0.4.0 kea-exporter no longer runs under Debian 9 with Python 3.5 because it uses f-strings for formatting text. f-strings where introduced in Python 3.6. I don't know if 3.6 is sufficient to run version 0.4.0 as I was only able to test it with 3.5 and 3.7.
https://github.com/mweinelt/kea-exporter/blob/develop/kea_exporter/kea.py#L26