now creating folder if it doesn't exist (#1066)

Author: timtreis

src/squidpy/datasets/_utils.py

@@ -185,7 +185,11 @@ def _extension(self) -> str:
 def _get_zipped_dataset(folderpath: Path, dataset_name: str, figshare_id: str) -> sd.SpatialData:
     """Returns a specific dataset as SpatialData object. If the file is not present on disk, it will be downloaded and extracted."""
 
-    if not folderpath.is_dir():
+    # Create directory if it doesn't exist
+    if not folderpath.exists():
+        logg.info(f"Creating directory `{folderpath}`")
+        folderpath.mkdir(parents=True, exist_ok=True)
+    elif not folderpath.is_dir():
         raise ValueError(f"Expected a directory path for `folderpath`, found: {folderpath}")
 
     download_zip = folderpath / f"{dataset_name}.zip"