Handling of empty groups in groupdict (optional groups) to default value

[BENR0]

The section pattern matching groupdict contains all groups even if they are not in the report (for example optional groups). In that case the group contains an empty value. This should be decoded to a default value to make it easier to convert reports to dataframes. Currently empty groups are skipped because sometimes they will overwrite previous decoded values (e.g. Wind speed from Nddff will be overwritten from optional group 00fff).

python_synop/synop/synop.py

Line 228 in 68fdb2a

if gname not in ghandlers: