diff --git a/neurodamus/cell_distributor.py b/neurodamus/cell_distributor.py
index 69e8a341..073419df 100644
--- a/neurodamus/cell_distributor.py
+++ b/neurodamus/cell_distributor.py
@@ -673,7 +673,14 @@ class LoadBalance:
     _cx_filename_tpl = "cx_%s#.dat"             # use # to well delimiter the target name
     _cpu_assign_filename_tpl = "cx_%s#.%s.dat"  # prefix must be same (imposed by Neuron)
 
-    def __init__(self, balance_mode, nodes_path, target_manager, output_path, target_cpu_count=None):
+    def __init__(
+        self,
+        balance_mode,
+        nodes_path,
+        target_manager,
+        output_path,
+        target_cpu_count=None,
+    ):
         """
         Creates a new Load Balance object, associated with a given node file
         """
@@ -982,7 +989,11 @@ def load_balance_info(self, target_spec):
     def _loadbal_dir(cls, nodefile, output_path) -> Path:
         """Returns the dir where load balance files are stored for a given nodes file"""
         nodefile_hash = hashlib.md5(nodefile.encode()).digest().hex()[:10]
-        return Path(output_path) / (cls._base_output_dir) / (cls._circuit_lb_dir_tpl % nodefile_hash)
+        return (
+            Path(output_path)
+            / (cls._base_output_dir)
+            / (cls._circuit_lb_dir_tpl % nodefile_hash)
+        )
 
     def _cx_filename(self, target_str, basename_str=False) -> Path:
         """Gets the filename of a cell complexity file for a given target"""
diff --git a/neurodamus/node.py b/neurodamus/node.py
index 763ef6db..b5cd0f4b 100644
--- a/neurodamus/node.py
+++ b/neurodamus/node.py
@@ -379,7 +379,13 @@ def compute_load_balance(self):
         # Compat Note: data_src in BlueConfig mode was the nrnPath. Not anymore.
         prosp_hosts = self._run_conf.get("ProspectiveHosts")
         data_src = circuit.CircuitPath if is_sonata_config else self._run_conf["nrnPath"]
-        load_balancer = LoadBalance(lb_mode, data_src, self._target_manager, self._run_conf["OutputRoot"], prosp_hosts)
+        load_balancer = LoadBalance(
+            lb_mode,
+            data_src,
+            self._target_manager,
+            self._run_conf["OutputRoot"],
+            prosp_hosts
+        )
 
         if load_balancer.valid_load_distribution(target_spec):
             logging.info("Load Balancing done.")