Update DigiMag.py

DigiMag.py

@@ -46,7 +46,7 @@ class DigiMag(datasets.GeneratorBasedBuilder):
             citation=_CITATION,
         )
 
-    def custom_dataset(src_url, dest_path):
+    def custom_dataset(self, src_url, dest_path):
         response = requests.get(src_url)
         response.raise_for_status()
 
@@ -59,7 +59,7 @@ class DigiMag(datasets.GeneratorBasedBuilder):
         # dl_manager is a datasets.download.DownloadManager that can be used to
         # download and extract URLs
     
-        downloaded_file = dl_manager.download_custom(_DRIVE_URL, custom_dataset)
+        downloaded_file = dl_manager.download_custom(_DRIVE_URL, self.custom_dataset)
         extracted_file = dl_manager.extract(downloaded_file)
         return [
             datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"filepath": os.path.join(extracted_file, 'digimag/train.csv')}),