Don't LBYL when creating missing data directories

It's better to ask forgiveness than permission. Just try to create
parent directories for any data file, and don't error if they
already exist.

diff --git a/mudpy/data.py b/mudpy/data.py
index 25b423b..b73959a 100644 (file)
--- a/mudpy/data.py
+++ b/mudpy/data.py
@@ -111,10 +111,9 @@ class Data:
            ):
 
             # make parent directories if necessary
-            if not os.path.exists(os.path.dirname(self.source)):
-                old_umask = os.umask(normal_umask)
-                os.makedirs(os.path.dirname(self.source))
-                os.umask(old_umask)
+            old_umask = os.umask(normal_umask)
+            os.makedirs(os.path.dirname(self.source), exist_ok=True)
+            os.umask(old_umask)
 
             # backup the file
             if "mudpy.limit" in self.universe.contents: