diff --git a/scripts/add_extra_components.py b/scripts/add_extra_components.py
index 02810f479..e8b789326 100644
--- a/scripts/add_extra_components.py
+++ b/scripts/add_extra_components.py
@@ -266,13 +266,10 @@ def attach_hydrogen_pipelines(n, costs, config):
     )
 
     # setup pipelines as bidirectional and lossy
-    lossy_bidirectional_links(n,"H2 pipeline")
+    lossy_bidirectional_links(n, "H2 pipeline")
 
 
-def lossy_bidirectional_links(
-        n: pypsa.components.Network,
-        carrier: str
-    ):
+def lossy_bidirectional_links(n: pypsa.components.Network, carrier: str):
 
     "Split bidirectional links into two unidirectional links to include transmission losses."
 
@@ -280,10 +277,8 @@ def lossy_bidirectional_links(
 
     if carrier_i.empty:
         return
-    
-    logger.info(
-        f"Splitting bidirectional links with the carrier {carrier}"
-    )
+
+    logger.info(f"Splitting bidirectional links with the carrier {carrier}")
 
     n.links.loc[carrier_i, "p_min_pu"] = 0
 
diff --git a/scripts/solve_network.py b/scripts/solve_network.py
index e586a539d..5eef12ebf 100755
--- a/scripts/solve_network.py
+++ b/scripts/solve_network.py
@@ -854,13 +854,10 @@ def add_existing(n):
             n.generators.loc[tech_index, tech] = existing_res
 
 
-def add_lossy_bidirectional_link_constraints(
-        n: pypsa.components.Network
-    ) -> None:
-
-    '''
+def add_lossy_bidirectional_link_constraints(n: pypsa.components.Network) -> None:
+    """
     Ensures that the two links simulating a bidirectional_link are extended the same amount.
-    '''
+    """
 
     if not n.links.p_nom_extendable.any() or "reversed" not in n.links.columns:
         return
@@ -887,10 +884,10 @@ def get_backward_i(forward_i):
     backward_i = get_backward_i(forward_i)
 
     lhs = linexpr(
-        (1, get_var(n,"Link", "p_nom")[backward_i].to_numpy()),
-        (-1, get_var(n,"Link", "p_nom")[forward_i].to_numpy())
+        (1, get_var(n, "Link", "p_nom")[backward_i].to_numpy()),
+        (-1, get_var(n, "Link", "p_nom")[forward_i].to_numpy()),
     )
-    
+
     define_constraints(n, lhs, "=", 0, "Link-bidirectional_sync")