minor code cleaning

scripts/build_clustered_population_layouts.py

@@ -5,7 +5,6 @@ import xarray as xr
 import pandas as pd
 import atlite
 
-cutout_path = snakemake.config['atlite']['cutout_dir'] + "/" + snakemake.config['atlite']['cutout_name']+ ".nc"
 
 if __name__ == '__main__':
     if 'snakemake' not in globals():

scripts/prepare_sector_network.py

@@ -850,12 +850,12 @@ def add_electricity_grid_connection(n, costs):
     n.generators.loc[gens, "capital_cost"] += costs.at['electricity grid connection', 'fixed']
 
 
-def add_storage(network):
+def add_storage(n, costs):
     print("adding electricity and hydrogen storage")
 
     nodes = pop_layout.index
 
-    network.add("Carrier", "H2")
+    n.add("Carrier", "H2")
 
     n.madd("Bus",
         nodes + " H2",