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

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

scripts/add_electricity.py

@@ -142,19 +142,22 @@ def load_costs(tech_costs, config, elec_config, Nyears=1):  # 1
     """
     costs = pd.read_csv(tech_costs, index_col=["technology", "parameter"]).sort_index()
 
-    if os.path.basename(os.getcwd()) == 'pypsa-earth':
-        cooking = os.path.join(os.getcwd(), 'resources', config['clean_cooking']['cooking_costs'])
+    if os.path.basename(os.getcwd()) == "pypsa-earth":
+        cooking = os.path.join(
+            os.getcwd(), "resources", config["clean_cooking"]["cooking_costs"]
+        )
 
     else:
         script_directory = os.path.dirname(os.path.abspath(__file__))
-        root_directory = os.path.abspath(os.path.join(script_directory, '..'))
-        cooking = os.path.join(root_directory, 'resources', config['clean_cooking']['cooking_costs'])
+        root_directory = os.path.abspath(os.path.join(script_directory, ".."))
+        cooking = os.path.join(
+            root_directory, "resources", config["clean_cooking"]["cooking_costs"]
+        )
 
     cooking = pd.read_csv(cooking).set_index(["technology", "parameter"]).sort_index()
 
     costs = pd.concat([costs, cooking], ignore_index=False)
 
-
     # correct units to MW and EUR
     costs.loc[costs.unit.str.contains("/kW"), "value"] *= 1e3
     costs.unit = costs.unit.str.replace("/kW", "/MW")
@@ -829,7 +832,6 @@ def add_nice_carrier_names(n, config):
     # Snakemake imports:
     demand_profiles = snakemake.input["demand_profiles"]  # demand profiles loaded
 
-
     costs = load_costs(
         snakemake.input.tech_costs,
         snakemake.params.costs,