diff --git a/data/demand/fuel_shares.csv b/data/demand/fuel_shares.csv
index a3a4fa76..a380b12e 100644
--- a/data/demand/fuel_shares.csv
+++ b/data/demand/fuel_shares.csv
@@ -2,4 +2,3 @@ country,oil residential heat share,biomass residential heat share,biomass to ele
 MA, 0.6667, 0.75,0.0, 0.5, 0.0, 0.5,0.6,0,0,0.75
 NG, 0.6667, 0.75,0.0, 0.5, 0.0, 0.5,0.6,0,0,0.75
 BJ, 0.6667, 0.75,0.0, 0.5, 0.0, 0.5,0.6,0,0,0.75
-
diff --git a/scripts/build_base_energy_totals.py b/scripts/build_base_energy_totals.py
index a09b79d2..35794ee8 100644
--- a/scripts/build_base_energy_totals.py
+++ b/scripts/build_base_energy_totals.py
@@ -338,7 +338,7 @@ def calc_sector(sector):
     # Fetch country list and demand base year from the config file
     year = snakemake.config["demand_data"]["base_year"]
     countries = snakemake.config["countries"]
-    #countries = ["NG", "BJ"]
+    # countries = ["NG", "BJ"]
 
     # Filter for the year and country
     df_yr = df[df.Year == year]
diff --git a/scripts/prepare_energy_totals.py b/scripts/prepare_energy_totals.py
index ce9bf72e..d820b11b 100644
--- a/scripts/prepare_energy_totals.py
+++ b/scripts/prepare_energy_totals.py
@@ -40,7 +40,7 @@ def get(item, investment_year=None):
         sets_path_to_root("pypsa-earth-sec")
 
     countries = snakemake.config["countries"]
-    #countries = ["NG", "BJ"]
+    # countries = ["NG", "BJ"]
     investment_year = int(snakemake.wildcards.planning_horizons)
     demand_sc = snakemake.wildcards.demand  # loading the demand scenrario wildcard
 
@@ -57,8 +57,6 @@ def get(item, investment_year=None):
 
     options = snakemake.config["sector"]
 
-
-
     fuel_cell_share = get(
         options["land_transport_fuel_cell_share"],
         demand_sc + "_" + str(investment_year),