Update qa_discourse.py

qa_discourse.py

@@ -142,7 +142,7 @@ class QaDiscourse(datasets.GeneratorBasedBuilder):
 
         # merge annotations from sections 
         df = pd.concat([pd.read_csv(fn, sep='\t', on_bad_lines='skip') for fn in filepaths]).reset_index(drop=True) 
-        df = df.applymap(str) # must turn all values to strings explicitly to avoid type errors
+        df = df.map(str) # must turn all values to strings explicitly to avoid type errors
         for counter, row in df.iterrows():
             # Prepare question (3 "slots" and question mark)
             question = [row.question_start, row.question_aux, row.question_body.rstrip('?'), '?']