diff --git a/npbackup/__main__.py b/npbackup/__main__.py
index 18e223d..45d97f2 100644
--- a/npbackup/__main__.py
+++ b/npbackup/__main__.py
@@ -166,7 +166,7 @@ This is free software, and you are welcome to redistribute it under certain cond
         type=str,
         default=None,
         required=False,
-        help="Get repository statistics. If snapshot id is given, only snapshots statistics will be shown."
+        help="Get repository statistics. If snapshot id is given, only snapshots statistics will be shown.",
     )
     parser.add_argument(
         "--raw",
diff --git a/npbackup/configuration.py b/npbackup/configuration.py
index 3c564e0..58e671f 100644
--- a/npbackup/configuration.py
+++ b/npbackup/configuration.py
@@ -593,7 +593,9 @@ def get_repo_config(
                             _repo_config.s(key, value)
                             _config_inheritance.s(key, True)
                         # Case where repo_config contains list but group info has single str
-                        elif isinstance(_repo_config.g(key), list) and value is not None:
+                        elif (
+                            isinstance(_repo_config.g(key), list) and value is not None
+                        ):
                             merged_lists = _repo_config.g(key) + [value]
 
                             # Special case when merged lists contain multiple dicts, we'll need to merge dicts
diff --git a/npbackup/core/runner.py b/npbackup/core/runner.py
index 005cce0..54eb316 100644
--- a/npbackup/core/runner.py
+++ b/npbackup/core/runner.py
@@ -41,7 +41,11 @@ logger = logging.getLogger()
 
 
 def metric_writer(
-    repo_config: dict, restic_result: bool, result_string: str, operation: str, dry_run: bool
+    repo_config: dict,
+    restic_result: bool,
+    result_string: str,
+    operation: str,
+    dry_run: bool,
 ) -> bool:
     backup_too_small = False
     operation_success = True
@@ -116,9 +120,7 @@ def metric_writer(
             metrics.append(
                 f'npbackup_oper_state{{{labels},action="{operation}",repo="{repo_name}"}} {0 if restic_result else 1}'
             )
-        metrics.append(
-            f'npbackup_exec_state{{{labels}}} {exec_state}'
-        )
+        metrics.append(f"npbackup_exec_state{{{labels}}} {exec_state}")
         logger.debug("Metrics computed:\n{}".format("\n".join(metrics)))
         if destination:
             logger.debug("Sending metrics to {}".format(destination))
@@ -608,7 +610,7 @@ class NPBackupRunner:
                 return False
 
         return wrapper
-    
+
     def metrics(fn: Callable):
         """
         Write prometheus metrics
@@ -619,8 +621,8 @@ class NPBackupRunner:
             result = fn(self, *args, **kwargs)
             metric_writer(self.repo_config, result, None, fn.__name__, self.dry_run)
             return result
-        return wrapper
 
+        return wrapper
 
     def create_restic_runner(self) -> bool:
         can_run = True
@@ -1329,7 +1331,6 @@ class NPBackupRunner:
         )
         return self.restic_runner.repair(subject)
 
-
     @threaded
     @catch_exceptions
     @metrics
@@ -1429,4 +1430,4 @@ class NPBackupRunner:
         if self.json_output:
             js["result"] = group_result
             return js
-        return group_result
\ No newline at end of file
+        return group_result
diff --git a/npbackup/restic_metrics/__init__.py b/npbackup/restic_metrics/__init__.py
index aca8549..282cc8d 100644
--- a/npbackup/restic_metrics/__init__.py
+++ b/npbackup/restic_metrics/__init__.py
@@ -232,7 +232,9 @@ def restic_json_to_prometheus(
             prom_metrics.append(f'restic_{key}{{{labels},action="backup"}} {value}')
 
     try:
-        processed_bytes = BytesConverter(str(restic_json['total_bytes_processed'])).human
+        processed_bytes = BytesConverter(
+            str(restic_json["total_bytes_processed"])
+        ).human
         logger.info(f"Processed {processed_bytes} of data")
     except Exception:
         logger.error(f"Cannot find processed bytes: {exc}")
diff --git a/npbackup/restic_wrapper/__init__.py b/npbackup/restic_wrapper/__init__.py
index cc645be..e9789e5 100644
--- a/npbackup/restic_wrapper/__init__.py
+++ b/npbackup/restic_wrapper/__init__.py
@@ -818,7 +818,9 @@ class ResticRunner:
             if exclude_files_larger_than:
                 try:
                     # Default --exclude_larger_than unit is bytes
-                    exclude_files_larger_than = int(BytesConverter(exclude_files_larger_than))
+                    exclude_files_larger_than = int(
+                        BytesConverter(exclude_files_larger_than)
+                    )
                 except ValueError:
                     warning = f"Bogus unit for exclude_files_larger_than value given: {exclude_files_larger_than}"
                     self.write_logs(warning, level="warning")