[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

scripts/solve_network.py

@@ -514,7 +514,8 @@ def add_existing(n):
         if (
             snakemake.config["policy_config"]["monthly"]["reference_case"]
             and eval(snakemake.wildcards["h2export"]) != 0
-            and snakemake.config["policy_config"]["policy"] == "H2_export_monthly_constraint"
+            and snakemake.config["policy_config"]["policy"]
+            == "H2_export_monthly_constraint"
         ):
             n_ref_path = snakemake.output[0].replace(
                 snakemake.output[0].split("_")[-1], "0export.nc"