enh: improve error reporting for download from selection

ImagingDataCommons · Apr 1, 2024 · 4f7a4ef · 4f7a4ef
1 parent 62c9d7a
commit 4f7a4ef
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/idc_index/index.py b/idc_index/index.py
@@ -733,6 +733,10 @@ def download_from_selection(
             TypeError: If any of the parameters are not of the expected type
         """
 
+        downloadDir = os.path.abspath(downloadDir).replace("\\", "/")
+        if not os.path.exists(downloadDir):
+            raise ValueError("Download directory does not exist.")
+
         if collection_id is not None:
             if not isinstance(collection_id, str) and not isinstance(
                 collection_id, list