fix: improve formatting and readability in get_filesystem and BaseFileIO

Author: legout

src/flowerpower/fs/base.py

@@ -600,10 +600,11 @@ def get_filesystem(
         if dirfs:
             base_path = path.split("://")[1]
             if fs.protocol == "dir":
-                
                 if base_path != fs.path:
                     fs = DirFileSystem(
-                        path=posixpath.join(fs.path, base_path.replace(fs.path, "").lstrip("/")),
+                        path=posixpath.join(
+                            fs.path, base_path.replace(fs.path, "").lstrip("/")
+                        ),
                         fs=fs.fs,
                     )
             else:

src/flowerpower/plugins/io/base.py

@@ -92,7 +92,7 @@ def __post_init__(self):
                 fs=self.fs,
                 dirfs=True,
             )
-        
+
         self.storage_options = (
             self.storage_options or self.fs.storage_options
             if self.protocol != "dir"
@@ -120,10 +120,9 @@ def protocol(self):
     @property
     def _base_path(self) -> str:
         """Get the base path for the filesystem."""
-        return  (
-                self.path if isinstance(self.path, str) else os.path.commonpath(self.path)
-            )
-
+        return (
+            self.path if isinstance(self.path, str) else os.path.commonpath(self.path)
+        )
 
     @property
     def _path(self) -> str | list[str]: