Update convert_chukan_fmt_1.py

convert_chukan_fmt_1.py

@@ -59,11 +59,12 @@ def shuffle_and_combine_options(text_a, text_b):
 def create_explanation(script_english,script_japanese,choices_english, choices_japanese,question_english,question_japanese):
     choices_english = choices_english.replace("/", "\n")
     choices_japanese = choices_japanese.replace("/", "\n")
-    question_english = "" if question_english == "" else "\n\nQuestion：\n" + question_english 
-    question_japanese = "" if question_japanese == "" else  "\n\nQuestion：\n" + question_japanese
+    question_english = "" if question_english == "" or pd.isnull(question_english) else "\n\nQuestion：\n" + question_english 
+    question_japanese = "" if question_japanese == "" or pd.isnull(question_japanese) else  "\n\nQuestion：\n" + question_japanese
     explanation = f"■英語\n{script_english}{question_english}\n\n選択肢：\n{choices_english}\n\n■日本語訳\n{script_japanese}{question_japanese}\n\n選択肢：\n{choices_japanese}"
     return explanation
 
+
 def convert_chukan_fmt_1(csv_file):
     df_input = pd.read_csv(csv_file.name)
     data = {