simplify a tiny bit

recipes.py

@@ -1,5 +1,4 @@
 from typing import Dict, List, Any, Optional
-from dataclasses import dataclass
 import os
 
 import yaml
@@ -10,6 +9,7 @@ class Unit:
     def __init__(self, name: str) -> None:
         self.name = name
 
+
 class Units:
     def __init__(self) -> None:
         self.units: List[Unit] = []
@@ -251,15 +251,7 @@ def rendertemplate(
     print(f"rendering {file}")
     outstr = template.render(args)
 
-    try:
-        os.mkdir("out")
-    except FileExistsError:
-        pass
-
-    try:
-        os.mkdir(f"out/{format}")
-    except FileExistsError:
-        pass
+    os.makedirs(f"out/{format}", exist_ok=True)
 
     with open(f"out/{format}/{file}", "w", encoding="utf-8") as f:
         f.write(outstr)