Update news_category_prediction.py

news_category_prediction.py

@@ -57,6 +57,8 @@ def predict_news_category(old_news: pd.DataFrame, new_news: pd.DataFrame, interp
             old_news = old_news.copy()
             logger.warning(f'old news columns: {[*old_news.columns]}')
             logger.warning(f'{len(old_news)} old news items found')
+            old_news.drop(columns='_id', inplace=True)
+            logger.warning('Dropped _id column from old news data frame.')
         else:
             logger.warning('No old news is found')
             old_news = new_news.copy()