Adding better error message regarding web root folder access, thanks …

…to msteijaert
chemprop · Sep 22, 2020 · fc35354 · fc35354
1 parent 0ff6fd4
commit fc35354
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/chemprop/web/utils.py b/chemprop/web/utils.py
@@ -24,6 +24,10 @@ def set_root_folder(app: Flask, root_folder: str = None, create_folders: bool =
 
     # Create folders
     if create_folders:
+        if not os.access(os.path.dirname(app.config['ROOT_FOLDER']), os.W_OK):
+            raise ValueError(f'You do not have write permissions on the root_folder: {app.config["ROOT_FOLDER"]}\n'
+                             f'Please specify a different root_folder while starting the web app.')
+
         for folder_name in ['ROOT_FOLDER', 'DATA_FOLDER', 'CHECKPOINT_FOLDER', 'TEMP_FOLDER']:
             os.makedirs(app.config[folder_name], exist_ok=True)