Use black as formatter for python files

startup_scripts/startup_script_utils/load_yaml.py

@@ -1,11 +1,12 @@
 from pathlib import Path
+
 from ruamel.yaml import YAML
 
 
 def load_yaml(yaml_file: str):
-  yf = Path(yaml_file)
-  if not yf.is_file():
-    return None
-  with yf.open("r") as stream:
-    yaml = YAML(typ="safe")
-    return yaml.load(stream)
+    yf = Path(yaml_file)
+    if not yf.is_file():
+        return None
+    with yf.open("r") as stream:
+        yaml = YAML(typ="safe")
+        return yaml.load(stream)