Refine code

wikipedia.py

@@ -981,7 +981,6 @@ class Wikipedia(datasets.GeneratorBasedBuilder):
         def _extract_content(filepath):
             """Extracts article content from a single WikiMedia XML file."""
             logger.info("generating examples from = %s", filepath)
-            content = []
             f = bz2.BZ2File(filename=filepath)
             # Workaround due to: https://github.com/tensorflow/tensorflow/issues/33563
             utf_f = codecs.getreader("utf-8")(f)
@@ -1007,8 +1006,7 @@ class Wikipedia(datasets.GeneratorBasedBuilder):
                 if raw_content is None or red_ is not None:
                     continue
 
-                content.append((id_, title, raw_content))
-            return content
+                yield (id_, title, raw_content)
 
         def _clean_content(inputs, language):
             """Cleans raw wikicode to extract text."""
@@ -1037,7 +1035,9 @@ class Wikipedia(datasets.GeneratorBasedBuilder):
             examples.put(ProcessDone())
 
         with multiprocessing.Pool() as pool:
+            print("start apply_async")
             result = pool.apply_async(parse_and_clean, filepaths)
+            print("apply_async called")
             n = len(filepaths)
             complete = 0
             while complete != n: