Update LoadingScript

LoadingScriptPractice.py

@@ -115,13 +115,13 @@ class LoadingScriptPractice(datasets.GeneratorBasedBuilder):
         )
 
         data_paths = dict()
-        for path in data_paths["train"]:
+        for path in data_urls["train"]:
             dname = dirname(path)
             folder = basename(Path(dname))
             data_paths[folder] = path
 
         metadata_paths = dict()
-        for path in metadata_paths["train"]:
+        for path in metadata_urls["train"]:
             dname = dirname(path)
             folder = basename(Path(dname))
             metadata_paths[folder] = path