DRI production variable not contained in public Ariadne1 database

[cpschau]

Using the open data of Ariadne1, build_scenarios throws an error in get_DRI_share as the variable Production|Steel|Primary|Direct Reduction Hydrogen does not exist within the public database. Weirdly, handling the error using try and except clauses did not work. An if-else clause would be required instead. Therefore, it might make sense to also replace the other try-except statements in the script.

Error Message

KeyError: 'Production|Steel|Primary|Direct Reduction Hydrogen'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/scratch/htc/cschauss/pypsa-ariadne/.snakemake/scripts/tmppkkd_cud.build_scenarios.py", line 251, in <module>
    write_to_scenario_yaml(input, output, scenarios, df)
  File "/scratch/htc/cschauss/pypsa-ariadne/.snakemake/scripts/tmppkkd_cud.build_scenarios.py", line 200, in write_to_scenario_yaml
    dri_fraction = get_DRI_share(
                   ^^^^^^^^^^^^^^
  File "/scratch/htc/cschauss/pypsa-ariadne/.snakemake/scripts/tmppkkd_cud.build_scenarios.py", line 63, in get_DRI_share
    DRI_steel = df.loc[model, "Production|Steel|Primary|Direct Reduction Hydrogen"]